Ultrasound Imaging Systems

Description

By transmitting acoustic energy into the body and receiving and processing the returning reflections, phased-array ultrasound systems can generate images of internal organs and structures, map blood flow and tissue motion, and provide highly accurate blood velocity information. Historically, the large number of high-performance phased-array transmitters and receivers required to implement these imaging systems resulted in large and expensive cart-based implementations. Recently, advances in integration have allowed system designers to migrate to smaller, lower cost, and more portable imaging solutions with performance approaching these larger systems. The challenge moving forward is to continue to drive the integration of these solutions, while increasing their performance and diagnostic capabilities.


Transducers


A critical component of this system is the ultrasound transducer. A typical ultrasound imaging system uses a wide variety of transducers optimized for specific diagnostic applications. Each transducer is comprised of an array of piezoelectric transducer elements that transmit focused energy into the body and receive the resulting reflections. Each element is connected to the ultrasound system with fine coaxial cables. Typical transducers have 32 to as many as 512 elements and operate at frequencies from 1MHz to 15MHz. Most ultrasound systems provide two to as many as four switchable transducer connectors to allow the clinician to easily switch among the various transducers for each exam type.

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High-Voltage Multiplexing


A typical phased-array ultrasound system will have from 32 to as many as 256 transmitters and receivers. In many cases, the system will have fewer transmitters and receivers than the number of available transducer elements. In these cases, high-voltage switches located in the transducer or system are used as multiplexers to connect a specific transducer element to a specific transmitter/receiver (Tx/Rx) pair. In this way, the system can dynamically change the active transducer aperture over the available transducer element array.

The requirements for these switches are severe. They must handle transmit pulses with voltage swings as large as 200VP-P and with peak currents up to 2A. They must switch rapidly to quickly modify the configuration of the active aperture and maximize image frame rate. Finally, they must have minimal charge injection to avoid spurious transmissions and associated image artifacts.

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High-Voltage Transmitters


A digital transmit beamformer typically generates the necessary digital transmit signals with the proper timing and phase to produce a focused transmit signal. High performance ultrasound systems will generate complex transmit waveforms using an arbitrary waveform generator to optimize image quality. In these cases, the transmit beamformer generates digital 8-bit to 10-bit words at rates of approximately 40MHz to produce the required transmit waveform. Digital-to-analog converters (DACs) are used to translate the digital waveform to an analog signal, which is then amplified by a linear high-voltage amplifier to drive the transducer elements. This transmit technique is generally reserved for more expensive and less portable systems, as it can be very large, costly, and power hungry. As a result, the majority of ultrasound systems do not use this transmit-beamformer technique, but instead use multilevel high-voltage pulsers to generate the necessary transmit signals. In this alternate implementation highly-integrated, high-voltage pulsers quickly switch the transducer element to the appropriate programmable high-voltage supplies to generate the transmit waveform. To generate a simple bipolar transmit waveform, a transmit pulser alternately connects the element to a positive and negative transmit supply voltage controlled by the digital beamformer. More complex realizations allow connections to multiple supplies and ground in order to generate more complex multilevel waveforms with better characteristics. The slew rate and symmetry requirements for high-voltage pulsers have increased in recent years due to the popularity of second-harmonic imaging. Second-harmonic imaging takes advantage of the nonlinear acoustic properties of the human body. These nonlinearities tend to translate acoustic energy at fo to energy at 2fo. Reception of these second-harmonic signals has, for a variety of reasons, produced better image quality and is now widely used.

There are two basic methods used to implement second-harmonic imaging. In one method called standard-harmonic imaging, the second-harmonic of the transmit signal is suppressed as much as possible. As a result, the received second-harmonic derives solely from the nonlinear behavior of the body. This mode of operation requires that second-harmonic content of the transmit energy be at least 50dB below the fundamental. To achieve this, the duty cycle of the transmit pulse must be less than ±0.2% of a perfect 50% duty cycle. The other method, called pulse inversion, uses inverted transmit pulses to generate two phase-inverted receive signals along the same image line. Summation of these two phase inverted receive signals in the receiver recovers harmonic signals generated by nonlinear processes in the body. In this pulse-inversion method, the summed phase-inverted transmit pulses must cancel as much as possible. To do this, the rise and fall times of the high-voltage pulsers must match very closely.

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Image-Path Receivers


The ultrasound image-path receivers are used to detect 2D as well as pulsed-wave Doppler (PWD) signals necessary for color-flow imaging and spectral PWD. The receivers include a Tx/Rx switch; a low-noise amplifier (LNA); a variable-gain amplifier (VGA); an anti-alias filter (AAF); and an analog-to-digital converter (ADC).

Tx/Rx Switch
A Tx/Rx switch protects the LNA from the high-voltage transmit pulse and isolates the LNA’s input from the transmitter during the receive interval. The switch is usually implemented using an array of properly biased diodes which automatically turn on and off when presented with a high-voltage transmit pulse. The Tx/Rx switch must have fast recovery times to ensure that the receiver is on immediately after a transmit pulse. These fast recovery times are critical for imaging at shallow depths and for providing a low on-impedance to ensure that receiver noise sensitivity is maintained.

Low-Noise Amplifier
The LNA in the receiver must have excellent noise performance and sufficient gain. In a properly designed receiver the LNA will generally determine the noise performance of the full receiver. The transducer element is connected to the LNA through a relatively long coaxial transducer cable terminated into relatively low impedance at the LNA’s input. Without proper termination the cable capacitance, combined with the transducer element’s source impedence, can significantly limit the bandwidth of the received signal from a broadband transducer. Termination of the transducer cable into a low impedance reduces this filtering effect and significantly improves image quality. Unfortunately, this termination also reduces the signal level at the input to the LNA and, therefore, tends to reduce the receiver’s sensitivity. Consequently, it is important for the LNA to have active-input-termination capability to provide the requisite low-input impedance termination and excellent noise performance required under these conditions.

Variable-Gain Amplifier (VGA)
The VGA, sometimes called a time gain control (TGC) amplifier, provides the receiver with sufficient dynamic range over the full receive cycle. Ultrasound signals propagate in the body at approximately 1540 meters per second and attenuate at a rate of about 1.4dB/cm-MHz roundtrip. Immediately after an acoustic transmit pulse, the received "echo" signal at the LNA's input can be as large as 0.5VP-P. This signal quickly decays to the thermal noise floor of the transducer element. The dynamic range required to receive this signal is approximately 100dB to 110dB, and is well beyond the range of a realistic ADC. As a result, a VGA is used to map this signal into the ADC. A VGA with approximately 30dB to 40dB of gain is necessary to map the received signal into a typical 12-bit ADC used in this application. The gain is ramped as a function of time (i.e., "time gain control") to accomplish this dynamic range mapping. The instantaneous dynamic range of an ultrasound receiver is also very important; it affects 2D image quality and the system’s ability to detect Doppler shifts and thus blood or tissue motion. This is especially true in second-harmonic imaging where the second-harmonic signals of interest can be significantly less than signals at the transmit fundamental.

It is also the case in Doppler modes where small Doppler signals can be located within 1kHz or less of very large signals from tissue or vessel walls. As a result, both the broadband and near-carrier SNR is of prime interest, and is often limited by this stage of the receiver.

Anti-Alias Filter (AAF) and ADC
The AAF in the receive chain keeps high-frequency noise and extraneous signals that are beyond the normal maximum imaging frequencies from being aliased back to baseband by the ADC. Many times an adjustable AAF is provided in the design. To avoid aliasing and to preserve the time-domain response of the signal, the filter itself needs to attenuate signals beyond the first Nyquist zone. For this reason Butterworth or higher-order Bessel filters are used. The ADC used in this application is typically a 12-bit device running from 40Msps to 60Msps. This converter provides the necessary instantaneous dynamic range at acceptable cost and power levels. In a properly designed receiver, this ADC should limit the instantaneous SNR of the receiver. As previously mentioned, however, limitations in the poor performing VGAs many times limit receiver SNR performance.

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Digital Beamformers


The ADC's output signals are typically routed to digital-receive beamformers through a high-speed LVDS serial interface. This approach reduces PC-board (PCB) complexity and the number of interface pins. The beamformer contains upconverting lowpass or bandpass digital filters which increase the effective sample rate by as much as 4x to improve the system’s beamforming resolution. These upconverted signals are stored in memory and appropriately delayed, and then summed by a delay-coefficient calculator to yield the appropriate focus. The signals are also appropriately weighted, or "apodized," using an apodization calculator before summing. This step appropriately windows the receive aperture to lower the side-lobe interference of the receive beam and improve image quality.

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Beamformed Digital-Signal Processing


Received, beamformed, digital ultrasound signals are processed for visual and audio output using a wide variety of DSP and off-the-shelf PC-based computer solutions. This process can generally be separated into B-mode or 2D image processing, and Doppler processing associated with color-flow image generation and both PWD and continuous-wave Doppler (CWD) spectral processing.

B-Mode Processing
In B-mode processing, the RF beamformed digital signal is properly filtered and detected. The detected signal has an extremely wide dynamic range, which the B-mod processor must digitally compress into the visible dynamic range available for the display.

Color-Flow Processing
In color-flow processing, the RF digital beamformed data is digitally mixed by using quadrature local oscillators (LOs) at the transmit frequency to do the complex mixing into I and Q baseband signals. As a result, each sample of the acoustic receive line has associated magnitude and phase values assigned. In color-flow processing, 8 to 16 acoustic lines are typically collected along the same image path line in order to measure Doppler shifts. Reflections from moving blood flow or from moving tissue along that image path will create a Doppler shift and, therefore, change the phase of the baseband I/Q samples where that shift occurred. The color processor determines the average phase shift versus time for each point along that image path over the 8 to 16 lines; the processor also assigns a color to represent that average velocity. In this way, a twodimensional color representation of blood or tissue motion can be made.

Spectral Doppler
In spectral processing, the beamformed digital signals are digitally filtered, mixed to baseband by using quadrature local oscillators (LOs) at the transmit frequency, and then sampled at the transmit pulse repetition frequency (PRF). A complex, fast Fourier transform (FFT) is used to generate an output spectrum representing the velocity content of the signal. The signal magnitude for each bin of the FFT output is calculated and compressed to optimize the available, visible display dynamic range. The signal magnitude is finally displayed versus time on the ultrasound display. With CWD the signal is processed in much the same way. In addition to processing these signals for display, the spectral processor also generates left and right stereo audio signals that represent positive and negative velocities. A DAC converts these signals which are used to drive external speakers and headphones.

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Display Processing


The display processor performs the computations necessary to map the polar-coordinate, acoustic image data from the B-mode or color-flow processor into the rectangular-coordinate bitmap image to avoid image artifacts. This processing is generally referred to as R-θ conversion. The display processor also performs other spatial-image-enhancement filtering functions.

Continuous Wave Doppler (CWD)
CWD is a modality available in most cardiac and general-purpose ultrasound imaging systems, and it is used to accurately measure the higher-velocity blood flows typically found in the heart. In CWD mode, the available ultrasound transducer elements are split into equal halves about the center of the transducer aperture. Half of the elements are used as transmitters to produce a focused acoustic CWD transmit beam; the other half of the elements serve as receivers to produce a focused receive beam. The signals applied to the transmit elements are square waves at the Doppler frequency of interest, typically 1MHz to 7.5MHz. Transmit jitter needs to be minimized to avoid phase-noise generation that can adversely affect Doppler phase-shift detection. The transmit beam is focused by properly phasing the signals applied to the transmit elements. In a similar way, the CWD received signals are focused by phasing and summing the signals from each receive element.

Because the transmitters are on simultaneously with the receivers in this mode, the Doppler signals of interest are typically within a few kilohertz of a very large receive signal that is generated by reflections from stationary tissue at the transmit fundamental. The dynamic range necessary to handle this large signal is well beyond the range of the VGA, AAF, and 12-bit ADC in the image-receive path. As a result, an alternative high-dynamic receive solution for CWD is necessary. CWD receivers are typically implemented in one of two ways. In one method high-performance ultrasound systems typically extract a received CWD signal at the LNA output. Complex mixers at an LO frequency equal to the transmit frequency are then used to beamform the signals and mix them to baseband for processing. The phase of the I/Q LOs can be adjusted on a channel-by-channel basis to shift the phase of the received CWD signal. The output of these mixers is summed, bandpass filtered, and converted by an ADC. The resulting baseband beamformed signal is in the audio range (100Hz to 50kHz). Audio-frequency ADCs are used to digitize the I and Q CWD signals. These ADCs need significant dynamic range to handle both the large low-frequency Doppler signals from moving tissue and the smaller signals from blood. The other method to receive a CWD signal uses delay lines and is usually employed in low-cost systems. In this implementation signals are again extracted at the LNA’s output and converted into current signals. A crosspoint switch sums channels with similar phases into 8 to 16 separate output signals, as determined by the receive beamformer. Delay lines are used to delay and sum these signals into a single beamformed signal at the RF frequency. This signal is then mixed to baseband using an I/Q mixer with an LO at the transmit frequency. The resulting baseband audio signal is filtered and converted to a digital representation.

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Learn more: High-Voltage, High-Efficiency Buck Converters ›

Body Temperature Measurement: Send and Receive With Wearable NFC

Now your team can design devices that spot-measure the body’s core temperature with underarm tags, then “beam” it to a tablet. It’s an in-demand alternative to old-fashioned oral thermometers. Help customers beat hospital-borne infection.

Smallest 4-Channel I/O-Link Master and RGB Sensor

Like USB on an industrial scale, this “Quad Master” connects multiple sensor types to a central processing unit such as a Micro PLC—allowing the processing unit to provide valuable feedback to the sensors, and ultimately boosting productivity.

70x Faster Digital I/O Modules

Cut your digital I/O costs! Serialized input reduces design complexity, so you’re dealing with fewer components. Meanwhile, output processes data 70X faster than anything on the market, with 8 channels to drive legacy relays and switches.

Pulse Oximetry Measurement: Wearable Oxygen Monitor for Active Lifestyles

This pulse ox patch alerts COPD, allergy, and other patients to issues before they become life-threatening. It measures heart rate, heart valve operation, and oxygen level via optical signal and motion sensors.

Micro PLC: Cooler, Smaller, Faster

See how we cut PLC footprints by 10X and power consumption in half, with 70% faster throughput. The Micro PLC brings Industry 4.0 to life, putting controllers closer to the floor while slashing the annual $800 billion spent on maintenance.

Mobile POS: An Advanced Cryptographic and Physical Security Solution

Discover how to turn phones and tablets into POS acceptance devices. Based on our secure Deep Cover platform with a Cortex M3 core, this highly-integrated reference design can accept both smart (chip-based) and magnetic stripe cards.

Wellness Watch: A Wearable Wellness Platform Example

Built around Maxim’s family of medical microcontrollers, the Wellness Watch monitors heart rate, oxygen level, movement, position, temperature, and mood response. In addition to measuring body vital signs, the Wellness Watch has built-in security.

Beer Mug Factory: Maxim Integrated Industrial Products in Action

It’s Industry 4.0 in action. Watch as this fully-automated assembly line automatically creates a customized mug, complete with a token insert and individual signature, all controlled via handheld tablet. Analog integration makes it possible.

In the Lab: Analog Output Design Accelerator Kit

The components of an analog output must work seamlessly together. A purchased one can be complicated and incomplete; but building your own is a huge headache. Now there’s a third choice, with a power supply, diagnostics, schematics and a custom GUI.

In the Lab: Eliminate Flicker for MR16 LED Lighting

Designing circuits for MR16 LED lighting has two big challenges: dimming the lamp without flicker, and compatibility with electronic low-voltage transformers (ELVT). This video demonstrates how the MAX16840 LED Driver's current control scheme eliminates MR16 flicker at all dimming levels, even when used with a variety of electronic transformers.

Learn more: MAX16840 ›

In the Lab: Bluetooth Control of Power-over-Ethernet Lighting

See how simple it is to develop Power-over-Ethernet (PoE) based lighting. This video demonstrates an easy way to provide on/off and dimming control for an LED bulb using a smartphone with bluetooth connection. The simple design is made possible by the MAX5969 powered device controller and the MAX16832 high-voltage LED Driver IC.

Learn more:  Smart Lighting ›

In the Lab: IO-Link Smart Sensor System Demo

See how easy it is to get an IO-Link smart sensor system up and running with live data monitoring. Our 4-port IO-Link Master reference design (MAXREFDES79) leverages plug-and-play capability and the easy to use software GUI to monitor data from each of our four IO-link device modules: ambient light sensor (MAXREFDES23), proximity sensor (MAXREFDES27), RTD-to-digital sensor (MAXREFDES42), and 16-channel digital input (DI) hub (MAXREFDES36).

What is IO-Link?

Discover the benefits of the IO-Link smart sensor and actuator interface protocol. IO-Link is the new standard developed by an international consortium of hardware and software providers. IO-Link's remote programming capabilities and backwards compatibility enable direct factory upgrade from binary sensors to smart sensor functionality.

IO-Link Transceivers and Binary Drivers

How to Order Parts

How to Request a Quote

We Hear You

Maxim executives speak frankly about how we’ve re-energized our customer commitment, by rebuilding our systems, processes, supply chain, and organizational structure to deliver satisfaction every time. We’re listening. You’ll know it.

The Future of PoE LED Lighting

See examples of what the future holds for power over ethernet (PoE) LED lighting in the internet of things (IoT).

Learn more:  Smart Lighting ›

How to Find a Reliability Report

Solar Cell Optimizers Offer Huge Gains in Energy Harvesting

Solar Cell Optimizers provide huge gains in solar energy harvesting while simplifying installation and reducing overall cost. Our breakthrough technology embeds the MPPT function deep within each solar module, allowing more panels in the same space.

Surround View: From Fisheye to Birdseye

Surround View: From Fisheye to Birdseye

How to Submit a Sample Request Online

Solar Cell Optimizers Significantly Improve Module Performance

Learn how our solar cell optimizers improve solar cell performance by up to 20%. Unprecedented tolerance for inter-row shading allows the tightest row spacing. Our innovative technology prevents object shading hot-spots, extending the life of your modules. No special tools, hardware or wiring are required for installation.

Brushed DC Quad Motor Controller mbed Shield

What could you build with a brushed DC motor controller Arduino® shield? Our Arduino-compatible brushed DC motor driver reference design drives up to four motors, and easily interfaces to an mbed® platform. Featuring MAX14871, 4.5V to 36V full-bridge DC motor driver, MAXREFDES89 can be used with a wide range of motors, from mid-voltage down to battery powered. Watch this short video to see MAXREFDES89 in action.

Learn More: MAXREFDES89 ›

Micro PLC Universal Analog Input Card

The universal analog input is extremely popular in industrial systems. It accepts voltage, current, RTD and thermocouple inputs which provides flexibility for use in control and automation applications. Learn how our 24-bit universal analog input board makes use of the latest technologies and an innovative system architecture to simplify configuration and improve performance while reducing cost. All in an ultra-small Micro PLC form factor.

EE-Sim Design Requirements

How to set the Design Requirement specifications and create a schematic.

Learn more: EE-Sim Design and Simulation Tool ›

MAX38902EVKIT Board Photo

Evaluation Kit for the MAX38902A/MAX38902B/MAX38902C/MAX38902D (12μVRMS Low Noise 500mA LDO Linear Regulator)

EE-Sim Design Tradeoffs

Prioritize the design size, efficiency, or BOM cost based on your design needs. Learn how this selection is implemented in your schematic.

Learn more: EE-Sim Design and Simulation Tool ›

MAX98357, MAX98358, MAX98357/8, auto-configuring amp, auto-configuring digital class D amps, amplifier, class D amplifier, digital amplifier

Digital Input Class D Amplifiers Eliminate GSM Buzz

Our next generation digital input, Class D audio amplifiers provide the highest performance with superior noise immunity while simplifying design. These plug and play speaker amplifiers significantly reduce the number of components required compared to typical analog amplifier designs. Learn how we eliminate GSM buzz, simplify board design and reduce EMI while providing high 3.2W output power.

EE-Sim DC-DC Tool Overview

See a demonstration of the most commonly used functionality in EE-Sim. Includes opening a new DC-DC design, changing design requirements, creating a schematic, running simulations, comparing designs, and generating a report.

Learn more: EE-Sim Design and Simulation Tool ›

MAXREFDES73

Wearable Galvanic Skin Response System

Are you developing a wearable device? Galvanic skin response (GSR), or skin impedance, adds another dimension to health monitoring that is not captured by accelerometers and heart rate monitors. See how our GSR reference design captures non-aerobic effort for activities such as yoga.

Learn more: MAXREFDES73 ›

Smart Force Sensor Human Machine Interface Demo

Watch a demo of our new concept for human-machine interfaces. Traditional touchscreens are fragile and don’t work well with gloves. Our smart force sensor reference design measures mass and center of mass to provide location and downward force of the touch input. MAXREFDES82 is a rugged, low power design that works in harsh environments where gloves may be required and glass is not allowed.

Learn More: MAXREFDES82 ›

From the Meter Bar to the Band Gap Voltage Reference

Almost every electronic system incorporates a voltage reference. This tutorial will familiarize you with voltage references, their construction and performance. Zener and Band Gap technologies are discussed in detail, along with important performance parameters and recommended solutions for common circuit requirements.

Choose the Right Step-Up/Step-Down Voltage Regulator for Portable Applications

Portable devices are frequently powered by a single cell Lithium-Ion battery. The voltage swing from high to low after a full day's use presents a challenge for the loads powered by the battery, especially when the load requires a stable input voltage in the middle of the Lithium-Ion range of operation. This tutorial discusses this challenge and provides an optimum solution.

Learn More: Switching Regulators ›

Taking PC Security to a New Level

Learn how Design Shift, our design house partner, developed ORWL, a personal computer with physical security that utilizes the latest encryption methods to immediately detect tampering. The MAX32550 Cortex-M3 microcontroller with secure boot-loader is integrated into the motherboard to control power, interface with the display, communicate with the key fob and monitor the unit for tampering.

Learn more: MAX32550 ›

Buck Converter: The Power Train and LC Filter

The buck converter is considered by many to be the king of switching voltage regulators. Modern electronic designs frequently need to step a voltage source down to a value suitable to power a load while sustaining minimal losses. The buck converter is the simplest, most effective and most efficient way to achieve this goal. This technical tutorial reviews the theory and operation of the heart of the buck converter: the power train and LC filter.

Heart Rate Monitor Demo

Watch a live demo of a simple but accurate heart rate monitor design (MAXREFDES117) developed around our tiny, low-power heart rate sensor (MAX30102). Step-by-step instructions show you how to quickly set up and start receiving data using two popular development platforms–mbed® and Arduino®. Don't miss the bonus heart rate demo with the Adafruit Flora® wearable electronic platform!

Learn more: MAXREFDES117 ›

Cosmetic Sensor Demo

Cosmetic sensor demo with testimonials

Storefront Overview

Overview of the ecommerce storefront.

How to Submit a Formal Quote

Walkthrough of the quote request process in the ecommerce storefront.

How to Place an Order with an Approved Quote

Walkthrough of placing an order with an approved quote through the ecommerce storefront.

How to Place an Order

Walkthrough of the ordering process in the ecommerce storefront.

Cell-String Optimizers Enable Flexible PV System Design

Produce more energy and simplify the design of complex rooftops by using cell-string optimizers in place of traditional bypass diodes. All while continuing to use preferred inverter and BOM components with no change to your existing installation and commissioning process.

Solar Cell Optimizer Technology ›

Demo: Enable Trusted Sensors and Notification for IoT Applications

Watch as a web server authenticates or rejects a water filter sensor node and wifi enabled controller. This unique demonstration of MAXREFDES143 shows how authentication and data integrity can easily be added to an IoT ecosystem.

Learn more: MAXREFDES143 ›

Pocket IO: The New Pathway to Industry 4.0

Get a close-up look at the functions and innovative devices that enable the Pocket IO to put the power of Industry 4.0 in your pocket.

Learn more ›

Sneak Preview: Soccer Ball Factory

Get a glimpse of the Pocket IO in action in our Soccer Ball Testing and Personalization Factory, to be unveiled at electronica 2016.

Learn more ›

Pocket IO PLC Development Platform Setup and Demo

Follow step by step instructions to get up and running with your Pocket IO. Review kit contents, make connections, download the Arduino IDE, and install the libraries. Walk through an example sketch and see how to run examples for each of the Pocket IO blocks. By the end of the video, you'll be ready to start programming your own custom applications.

Learn more: MAXREFDES150

VR Engagement Sensor Demo

Our engagement sensors use heart monitoring technology to gauge excitement, stress, and engagement.

The Pocket IO Controls a Fischertechnik Robot

Using a tablet as the control pad, watch the MAXREFDES150 Pocket IO work with the MAX14870 motor drivers and the MAX14890 encoder receivers to control a Fischertechnik robot as it selects and stacks a series of colored blocks in a precise pattern.

Learn more: Pocket IO PLC Development Platform

Heat Map Comparison of IO-Link Device Transceivers

See how the efficiency of our new generation MAX14827 IO-Link device transceiver compares to its predecessor and to a competitive device as shown on a FLIR heatmap display.

Learn more: MAX14827

Meet the Health Sensor Platform

Learn about the MAXREFDES100 hSensor platform, a full reference design, development and demo platform for wearable applications. The extremely small form factor, including multiple sensors, power management, microcontroller and mbed support, allows you to rapidly prototype and demonstrate new wearable use cases.

Learn more: hSensor Platform

Pocket IO Redefines the PLC for Industry 4.0

Learn how the MAXREFDES150 Pocket IO is 30% more efficient and 2½ times smaller than previous PLC platforms. The Pocket IO is a complete industrial platform equipped with 30 IOs featuring three different sensor inputs and motor controls for manufacturing or process automation applications.

Learn more: Pocket IO PLC Development Platform

Meet the Health Sensor Platform

See a Glimpse of the Future at electronica 2016

Watch the highlights from electronica 2016 where we demonstrated the factory of the future using the Pocket IO PLC Development Platform. Featured segments include a soccer ball testing and personalization factory, precision control of robots, and detection of goal throws with light curtains.

Learn more: Pocket IO PLC Development Platform

Take a Virtual Tour of the electronica 2016 Booth

Catch a virtual look at this year's dynamic trade show booth at electronic 2016. We showcased new products for Industry 4.0, Wearables, and Automotive applications, highlighting innovative solutions of the future.

Learn more: electronica

Isolated Power-Supply Reference Designs Accelerate Prototyping

See how the MAXREFDES111-MAXREFDES116 24V isolated, industrial power-supply reference designs simplify design of isolated power supplies. These tested designs with pre-qualified Wurth transformers enable immediate board placement and prototyping. Each comes with tailored specifications including various output voltages, currents, and topologies to allow easy measurement with probes or design-in for prototypes. Each reference design has been tested for load and line regulation, efficiency, and transient performance.

Learn more: Reference Design Center ›

Remote Tuner Technology for Automotive Radio

Overcome the challenges of automotive radio design. Learn how our remote tuner solution, based on the MAX2175 RF-to-Bits tuner and GMSL SerDes technology, reduces cost, improves performance and simplifies head unit design.

Learn more: Remote Tuner Technology ›

Blood Pressure Trending Demo

MAX8971EVKIT Board Photo

Evaluation System for the MAX8971 (Industry's Smallest 1.55A 1-Cell Li+ DC-DC Charger)

EE-Sim Webscope Waveform Viewer

Customize the display of EE-Sim simulation waveforms for optimal analysis. Configurable parameters include signal color, order, and grouping; axis scaling, placement, and synchronization; marker quantity and labels; auto and manual zoom; and formats for saving data.

EZ Setup of MAX17201/MAX17211 ModelGauge m5 Stand-Alone Fuel Gauges

See how to maximize run-time of your battery powered device without the need for battery characterization. In this video, the inventor of the ModelGauge™ algorithm walks you through the m5 EZ configuration wizard using the MAX17201/MAX17211 evaluation kit. Get up and running quickly and easily while maintaining high accuracy fuel gauge performance.

Learn more: MAX17201/MAX17211 Evaluation Kit ›

Get Started with the MAX32630FTHR Board

Find out how easy it is to configure the MAX32630FTHR board to build new projects. Learn how to import a project, compile a program, download code and execute a program with the MAX32630FTHR board. This video shows how to use the compiler and editor software feature of the ARM® mbed™ developer site with the development platform.

Learn more: MAX32630FTHR ›

Using the MAXREFDES155 – Protecting the Internet of Things

Is your IoT system designed with the highest levels of security in place? Watch this video to learn how to protect your system from hackers by designing security in from the start with Maxim’s DeepCover® embedded security reference design.

The Heart of the System – DS2476 and DS28C36 (01:47)
Getting to know the MAXREFDES155 (02:30)
Authenticated Messages (04:34)
Authenticated Commands (05:32)
Bulk Data Transfer (06:24)

Learn more: MAXREFDES155 ›

nanoPower Boost Converter Demo

Watch a demonstration of the extremely low quiescent current and true shutdown capabilities of our nanoPower boost converter using the MAX17222 evaluation kit. nanoPower regulators are ideal for wearable and hearable applications that require ultra-small size and high efficiency.

See MAX17222EVKIT ›

Sometimes it’s Smart to Have a Low IQ

How do you stretch battery life? It doesn’t take a genius.

EZ Setup of MAX17055 ModelGauge m5 Low IQ Stand-Alone Fuel Gauge

See how to maximize run-time of your battery powered device without the need for battery characterization. In this video, the inventor of the ModelGauge algorithm walks you through the m5 EZ configuration wizard using the MAX17055 evaluation kit.

Learn more ›

Tour of New Search Features

Take a brief tour of the new features of Maxim's site search tool, designed to get you to the content you need, faster and easier. Let's get started!

Self Balancing Robot

Dallas Hackathon 2016

Safeguard Your Connected Products with Turnkey Security

Learn how to easily add a robust layer of security to new or existing designs with the MAXQ1061 DeepCover® Cryptographic Controller for Embedded Devices. As cyberattacks become more prevalent, designers are increasingly faced with the challenge of protecting their embedded devices against malicious attackers. See how the MAXQ1061 not only protects new embedded devices but can also be added to existing designs, while providing secure key and certificate storage, secure firmware, and secure communication.

Learn more: MAXQ1061 ›

SC2200 and SC1894 RF Power Amplifier Linearizers

Learn the key differences between the SC2200 and SC1894 RF Power Amplifier Linearizer (RFPAL) devices. They are ideal for cellular infrastructure applications including small cell, remote radio head (RRH), antenna array systems (AAS), MIMO, broadcast transmitters, and microwave backhaul.

Learn more ›

Introduction to the MAX11192/95/98 12 Bit, 2Msps, Dual Simultaneous Sampling SAR ADC with Integrated Reference

This video provides an introduction to the MAX11192, MAX11195, and MAX11198, dual simultaneous sampling, 12-Bit, 2Msps ADCs with rntegrated reference.

Dual IO-Link Master Transceiver: MAX14819 Demo

Learn how the MAX14819 IO-Link master transceiver addresses key trends for industrial communications with over 50% lower power dissipation, robust communications in harsh environments, and a scalable, flexible architecture. See how easy it is to evaluate the MAX14819 using the MAXREFDES145 8-channel IO-Link master reference design as it communicates with an IO-Link proximity sensor.

Learn more: MAX14819

MAX77714EVKIT Board Photo

Evaluation Kit for the MAX77714 (Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing for Multicore Applications)

MAX32625MBED Board Photo

MAX32625MBED ARM mbed Enabled Development Platform for the MAX32625 (Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 512KB Flash and 160KB SRAM)

Understanding 4-20mA Data Transmission

Learn the core concepts behind 4-20mA data transmission, which is fundamental to the operation of loop-powered sensor transmitter devices.

Learn more ›

Automotive Gesture Demo

Automotive Lighting Demo

Overcome the Challenges of Automotive Radio Design

Watch as we demonstrate our Automotive Remote Tuner technology designed to simplify automotive radio head unit design. Our remote tuner architecture reduces the amount of cabling required and places remote tuners in close proximity to antennas while reducing noise and lowering power consumption. The demo walks through a sample system setup and operation utilizing the unique radio architecture.

Increase Battery Life and Efficiency with PMICs at Less Than Half the Size

Take a closer look at the MAX77650 and MAX77651 ultra-low power PMICs. Their extremely low standby power supports longer battery life—ideal for wearables, hearables, and IoT devices. We demonstrate the devices' low quiescent current and show a 9% increase in overall system efficiency gained using the MAX77650 evaluation kit.

Learn more: MAX77650

Introduction to the MAXM17532 4V to 42V, 100mA High Efficiency, DC-DC Step-Down Power Module with Integrated Inductor

This video provides an introduction to the MAXM17532, a 4V to 42V, 100mA High Efficiency, DC-DC Step-Down Power Module with Integrated Inductor.

Power Seminar: 24V+ Power Solutions--Power Design Doesn’t Get Any Cooler, Smaller, or Simpler

Introduction and agenda for the Power System Design Seminar series.

Watch first module ›

Power Seminar Module 1: Introduction to Switching Regulators

Discussion of the concept and theory behind switching regulators and how they are used to build nonisolated power supplies.

Watch next module ›

Power Seminar Module 2:  Introduction to Control Algorithms in Switching Regulators

An overview of how switching is controlled in switching regulators. Focuses on three popular control algorithms: constant on-time, voltage mode control and current-mode control.

Watch next module ›

Power Seminar Module 3: Synchronous Switching Regulators

In-depth discussion of the operation of synchronous switching regulators, increasingly used to obtain higher power conversion efficiency.

Watch next module ›

Power Seminar Module 4: Design of Filter Components

Highlights of some of the other components that make up a switch-mode power supply. Focuses on passive components such as inductors and capacitors.

Watch next module ›

Power Seminar Module 5: Layout Considerations

PCB layout considerations:  layout differences can make a big impact on the performance of a power system design.

Watch first module ›

Power Seminar Module 6: Example Design: Synchronous DC-DC Regulator Using the EE-Sim Design and Simulation Environment

Viral Vaidya, executive business manager for our industrial power solutions, walks through how to design a 24V+ power system using some of Maxim's latest synchronous switching regulators. Includes a demonstration of how to simulate the power system design using the online EE-Sim design and simulation environment.

Start your simulation ›

High Speed Serial Links for Automotive Applications

In automotive applications, Maxim’s GMSL SerDes technology provides a compression-free alternative to Ethernet, delivering 10x faster data rates, 50% lower cabling costs, and better EMC compared to Ethernet. Maxim's GMSL chipsets drive 15 meters of coax or STP cabling thereby providing the margin required for robust and versatile designs. The links enable applications such as ADAS, Surround View, Digital Displays, Adaptive Cruise Control and more. This training gives an overview on the applications, introduces relevant Maxim GMSL chip sets and gives practical guidelines for successful design-in and measurements.

Power Seminar Module 7: Theory Behind Isolated DC-DC Solutions

Introduction to isolated DC-DC power supply design and the theory behind isolation.

Watch next module ›

Power Seminar Module 8: Eliminating Optocouplers for Isolated DC-DC Designs

Introduction to the design of isolated power supplies without using optocouplers to bring secondary signals back to the primary enabling regulation.

Watch next module ›

Power Seminar Module 9: Practical Design Considerations for an Iso-Buck Converter

How to design an iso-buck that implements an isolated power system without using an optocoupler.

Watch next module ›

Power Seminar Module 10: Practical Design Considerations for a No-Opto Flyback Converter

How to design a no-opto flyback that implements an isolated power system without using an optocoupler.

Watch module 1 ›

Power Seminar Module 11: Understanding System Protection

Overview of system protection and why the need for it is increasing.

Watch next module ›

Power Seminar Module 12: Understanding Specifications of Protection ICs

A detailed look at some of the specifications that are important for a modern integrated protection IC.

Watch first module ›

DC-DC Converter Design Made Easy

Learn how to complete a power supply design for wide input-voltage DC-DC converters using the EE-Sim Design and Simulation tool. Watch as we walk through how voltage regulators work, their key design considerations, and the procedures to follow in quickly designing, simulating, and comparing power designs. We also show the unique qualities of our Himalaya power module family, providing information on their system requirements and performance.

MAX20733EVKIT Board Photo

Evaluation Kit for the MAX20733 (Integrated, Step-Down Switching Regulator)

Monitor System Loads with Current-Sense Amps

Watch a demonstration of high-accuracy power monitoring using the MAX44298 evaluation kit. Learn how to add that extra bit of "analog hardware insurance" to your next design using current-sense amplifiers with very low offset error and very low gain error, for more robust and higher quality end products.

Introduction to the MAX30110-12 Optimized Pulse-Oximeters and Heart Rate AFE for Wearable Health

This video provides an introduction to the MAX30110-12, a Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health.

Maxim Website Tour: eBriefs

eBriefs are interactive pdf summaries of key product information and resources. Learn the benefits of the eBrief and how to quickly find and share the one you need.

Introduction to the MAX14748 USB Type-C Charger

This video provides an introduction to the MAX14748, a USB Type-C Charger.

Summer of Love Contest Winner

Introduction to the MAX86140 Optical Pulse Oximeter and Heart-Rate Sensor

This video provides an introduction to the MAX86140, a Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health.

How to Use the MAX32630FTHR with an OLED Display - Part 3

In this last installment in the series, Greg shows how easy it is to configure the Mbed™ libraries for the MAX32630FTHR board and OLED display. You’ll learn how to modify and customize the software for your needs.

Learn more ›

How to Use the MAX32630FTHR with an OLED Display - Part 2

In this video, Greg shows how to load the software and Mbed™ libraries for the MAX32630FTHR board and guides you through each phase of the installation process. To learn more about how to configure the software for the MAX32630FTHR board, watch, "How to Use the MAX32630FTHR with an OLED Display - Part 3."

Learn more ›

How to Use the MAX32630FTHR with an OLED Display - Part 1

Watch as Greg demonstrates how to drive a commonly available OLED display using the MAX32630FTHR application platform. In this first installment, he shows how to select and configure hardware components including peripherals and Adafruit feather boards. To learn how to load the software for the MAX32630FTHR board, watch, "How to Use the MAX32630FTHR with an OLED Display - Part 2."

Learn more ›

Why Every Car Needs These High-Speed Serial Links

See why Gigabit Multimedia Serial Link (GMSL) SerDes technology provides the bandwidth needed to transport a burgeoning volume of multi-type data to enable sophisticated ADAS and infotainment capabilities in vehicles.

Learn more ›

How to Derive More System Efficiency from Battery-Powered Designs

Video game controller

Buck controllers can support the efficiency and battery life requirements of portable electronics.

Demonstrating Cryptographic Hash, Signatures, and Authentication

Almost every piece of technology we use today has some kind of embedded firmware. Rogue firmware, however, can leak data and cause device malfunctions. Watch this video to see how you can use the MAXAUTHDEMO1 kit, featuring the DS28C36 DeepCover® secure authenticator, to easily and securely authenticate your design.

Learn more ›

How to Extend I2C Lines Using the DS28E17 1-Wire-to-I2C Master

When trying to communicate with I2C over distances greater than two meters, several challenges may arise. Learn a method to extend I2C communication up to 100m using the 1-Wire® protocol and the DS28E17. For more information on this specific application, read: Extending I2C Communication Distance with the DS28E17.

Learn more: DS28E17 1-Wire®-to-I2C Master ›

How to Measure Temperature in Portable Projects I - Using the MAX31875 Temperature Sensor

In this video, Mohamed discusses different ways to add temperature measurement to his wearable electronics project. He evaluates the MAX31875 silicon-based temperature sensor, which measures <1mm2 and only consumes a few microamps. To see other ways of measuring temperature, watch the follow-up video, "How to Measure Temperature in Portable Projects II - Using the MAX17055 Fuel Gauge."

Learn more: MAX31875 Temperature Sensor ›

How to Set Up the MAXREFDES100 Health Sensor Platform (HSP)

In this video, Travis walks through the set-up of the MAXREFDES100 Health Sensor Platform and demonstrates how to use the software to examine data from the optical PPG sensor (MAX30101), a human body temperature sensor (MAX30205), and the ECG heart-rate sensor (MAX30003).

Learn more: MAXREFDES100 Health Sensor Platform (HSP) ›

Download the GUI

Learn how to upload firmware to the HSP ›

How to Setup the DS1922 Thermochron with OneWireViewer

In this video, Maebh Coleman shows how to get the DS1922 iButton to communicate with a PC using the free software OneWireViewer.

Learn more about the DS1922L ›

How to Measure Temperature in Portable Projects II - Using the MAX17055 Fuel Gauge

In this follow-up video, Mohamed discusses a few more ways to add temperature measurement to wearable electronics projects. He evaluates the MAX17055 fuel gauge that has an internal temperature sensor and thermistor-driving interface. To see additional ways to measure temperature, watch the previous video, "How to Measure Temperature in Portable Projects I - Using the MAX31875 Temperature Sensor."

Learn more: MAX17055 Fuel Gauge ›

Using the MAX35104 Gas Flow Measurement Chip, Part 1: Evaluation Kit Setup

Accurately measuring gas flow using ultrasonic techniques can be tricky – you have to account for signal attenuation and turbulence in the medium. Learn how to configure a simple test bed for gas flow transducers using the MAX35104 Gas Flow Meter SoC evaluation kit. To learn how to configure the GUI for measurement of time-of-flight data, watch "Using the MAX35104 Gas Flow Measurement Chip, Part 2: Configuring Evaluation Kit Software."

Learn More: MAX35104

Using the MAX35104 Gas Flow Measurement Chip, Part 2: Evaluation Kit Setup

Accurately measuring gas flow using ultrasonic techniques can be tricky – you have to account for signal attenuation and turbulence in the medium. Learn how to configure a simple test bed for gas flow transducers using the MAX35104 Gas Flow Meter SoC evaluation kit. To learn how to configure the GUI for measurement of time-of-flight data, watch "Using the MAX35104 Gas Flow Measurement Chip, Part 2: Configuring Evaluation Kit Software."

Learn More: MAX35104

Using the MAX35104 Gas Flow Measurement Chip, Part 3: Evaluation Kit Setup

Accurately measuring gas flow using ultrasonic techniques can be tricky – you have to account for signal attenuation and turbulence in the medium. Learn how to configure a simple test bed for gas flow transducers using the MAX35104 Gas Flow Meter SoC evaluation kit. To learn how to configure the GUI for measurement of time-of-flight data, watch "Using the MAX35104 Gas Flow Measurement Chip, Part 2: Configuring Evaluation Kit Software."

Learn More: MAX35104

Make High-Accuracy Biopotential and BioZ Measurements with MAX30001

Watch a demonstration of the MAX30001 Biopotential and Bioimpedance analog front-end as it performs ECG, respiration, heart rate and PACE detection while hooked up to our apps engineer. The easy-to-use GUI displays all waveforms captured by the low-power, high-sensitivity platform.

Learn more ›

Wristband Health Monitoring Demo with MAX86141

Watch a step-by-step demonstration of how to setup the MAX86140/MAX86141 Pulse Oximeter and Heart-Rate Sensor evaluation kit using our wristband demo platform. See the photoplethysmography (PPG) signals displayed on the easy-to-use GUI as they are generated in real-time from the two photodiode readout channels.

Learn more ›

ChipDNA–Defend Your IoT Designs from Hackers

Chances are, your IoT designs aren’t adequately protected from hackers. Watch this video to learn why hardware-based security offers better protection than its software-based counterpart. And see how Maxim’s DS28E38 DeepCover® secure authenticator with ChipDNA™ PUF technology offers the strongest protection against invasive attacks.

Learn more ›

Say Hello to the MAX32625PICO Rapid Development Platform

Get ready for a revolutionary shift in how embedded systems are developed and deployed. The MBED™-compatible MAX32625PICO is an ultra-small yet powerful, complete development platform for the MAX32625 Arm® Cortex®-M4 microcontroller with FPU. You can also use the MAX32625PICO as a debug adapter or drop it directly onto your prototype as a component in a larger application.

Learn More: MAX32625PICO

How to Setup the DS28E38 Evaluation Kit and Perform ECDSA Authentication

The DS28E38 DeepCover® Secure Authenticator with ChipDNA PUF Protection lets you protect your designs using crypto-strong authentication secured with a Physically Unclonable Function. Learn how to setup the evaluation kit hardware and software and see a demonstration of ECDSA authentication, using the simple software GUI.

Learn more ›

How to Set Up a SerDes Reverse Control Channel When PCLK is Not Available - Using the MAX96705/MAX96706 GMSL SerDes

Learn how to establish the I2C reverse control channel when PCLK is not available using the MAX96705 Gigabit Multimedia Serial Link (GMSL) serializer and MAX96706 GMSL deserializer.

Also see: How do I program the remote side of a SerDes link when PCLK is not present?

Learn more: MAX96705 16-Bit GMSL Serializer ›

Learn more: MAX96706 14-Bit GMSL Deserializer ›

How to Upload Firmware to the MAXREFDES100 Health Sensor Platform (HSP)

Learn how to upload example code to the MAXREFDES100 health sensor platform using the Mbed™ online compiler and get started with your own program. For information on how to set up the MAXREFDES100 HSP, watch the video, “How to Set Up the MAXREFDES100 Health Sensor Platform (HSP).”

Learn more: MAXREFDES100 Health Sensor Platform (HSP) ›

How to Set Up an Ultra-Low-Power Real-Time Clock, Part I – Using the MAX32630 Microcontroller

In this video, Mohamed discusses different ways of keeping track of time using real-time clock (RTC) circuits. He demonstrates the required settings to get the internal RTC of the MAX32630 microcontroller up and running for a smartwatch project. To learn more about using the RTC with the microcontroller in deep sleep mode, watch, "How to Set Up an Ultra-Low-Power Real-Time Clock, Part II – With the Microcontroller in Deep Sleep."

Learn more ›

Fast, Accurate Battery Management System for Safer EVs Using the MAX17843

Managing next-gen lithium-ion battery packs for hybrid and electric vehicles can be challenging. The MAX17843 delivers safe, accurate, and intelligent BMS operation while meeting stringent ASIL D requirements and saving up to 90% on isolation circuit BOM costs.

Learn more: MAX17843 ›

Introduction to the MAX14878-80 Isolated CAN Transceivers

This video provides an introduction to the MAX14878-80, 2.75kV and 5kV, isolated CAN transceivers with fault protection, that enable robust communications.

Introduction to the MAXM17574 DC-DC Step-Down Power Module with Integrated Inductor

This video provides an introduction to the MAXM17574, a 4.5-60V, 3A high-efficiency, DC-DC step-down power module with integrated inductor, enabling ease of design and small solution footprint.

Introduction to the MAX86150 Integrated Photoplethysmogram and Electrocardiogram Biosensor Module for Mobile Health

This video provides an introduction to the MAX86150, an integrated electrocardiogram, pulse oximeter, heart rate monitor sensor module. It includes internal LEDs, photodetectors, IR sensor and low-noise electronics with ambient light rejection.

Introduction to the MAX17557 Synchronous DC-DC Step-Down Controller

This video provides an introduction to the MAX17577, a 4.5-60V, wide input voltage synchronous DC-DC step-down controller, that enables design flexibility for industrial applications.

Introduction to the MAX17561-63 Adjustable Overvoltage and Overcurrent Protectors with High Accuracy

This video provides an introduction to the MAX17561-63, 4.5V to 36V, adjustable overvoltage and overcurrent protection ICs with integrated FETs and reverse current blocking.

Introduction to the MAX17761 High-Efficiency, Synchronous Step-Down DC-DC Converter

This video provides an introduction to the MAX17761, a 4.5V–76V, 1A, high-efficiency, synchronous step-down DC-DC converter with internal compensation, that enable high efficiency and low temperature rise.

Introduction to the MAX20067 TFT Bias Solution for Automotive Applications

This video provides an introduction to the MAX20067, an Automotive 3-channel display bias IC with VCOM buffer, level shifter, and I2C interface. This part provides an integrated power solution for TFT-LCD with synchronous boost, gate-shading, and I2C.

Introduction to the MAX20037-38 Automotive Buck Converters

This video provides an introduction to the MAX20037-38, Automotive 3.5A synchronous USB buck converters with I2C and protection/host charge emulator.

How to Record a Temperature-Logging Mission with the DS1922L

Watch as Maebh outlines the step-by-step process for recording a temperature-logging mission using the DS1922L iButton® temperature logger and the OneWireViewer software.  Learn how to navigate the OneWireViewer's interface to collect, measure, and save temperature data using the DS1922L.

Learn more: DS1922L ›

Understanding the Specifications of ADCs

Learn more about the process behind analog-to-digital conversion and the important specifications and criteria to consider when selecting and designing with an ADC.

Precision and High-Speed ADCs ›

How to Get Started with Power-over-Ethernet with MAX5969B and MAX5971B

In this video, Darragh demonstrates power delivery over a Power-over-Ethernet (PoE) system using the MAX5969B powered device (PD) controller and the MAX5971B power sourcing equipment (PSE).

Learn more: POE ›

How to Measure Temperature with a Thermocouple Using the MAX31856

Thermocouples are a great way to measure temperatures that vary over a wide range. In this video, Mohamed explains how thermocouples work and demonstrates a quick and easy way to get started reading temperature from a thermocouple using the MAX31856.

Learn more: MAX31856 ›

Learn the Fundamentals of Op Amps

Learn the fundamentals of one of the essential building blocks of analog circuits, the operational amplifier. Understand the important criteria and key specifications to consider when selecting op amps for many applications from consumer to industrial uses.

Learn more: Op Amps ›

Overview of Voltage References and Supervisors

In this video, understand the important aspects of voltage references and the key criteria in selecting the right one for your design. Also learn about voltage supervisors, the different types of supervisory products available and their key features.

Learn more: Voltage References ›

How to Optimize Light-Load Performance of Himalaya Step-Down Switching Regulators using the MAX17503EVKITB

In this video, Furqan describes the different modes of operation available in the Himalaya family of step-down switching regulators using the MAX17503EVKITB. Learn the advantages and trade-offs of pulse-width modulation (PWM), pulse-frequency modulation (PFM), and discontinuous conduction mode (DCM) when operating with small load currents.

Learn more: Himalaya Step-Down Switching Regulators ›

Using the Peripheral Management Unit – Part 3: What’s in a Descriptor?

In this third installment, examine each of the eight peripheral management unit (PMU) instructions – also known as descriptors – and learn how they are used in simple programs to transfer data. In “Using the Peripheral Management Unit–Part 4,” we’ll go into the lab to build a program to demonstrate how the PMU can automate some tasks while the CPU sleeps.

Learn More: MAX32630 User's Guide ›

Using the Peripheral Management Unit – Part 4: A PMU Program

In this video, learn how to use the demo project to blink the LEDs using the PMU and the real-time clock (RTC). The principles gained in this video will help you build your own PMU program for your next project. In the next video, “Using the Peripheral Management Unit–Part 5,” you’ll see how the main() program sets up and uses the PMU on the MAX32630 Evaluation Kit.

Learn More: MAX32630 ›

Using the Peripheral Management Unit – Part 1: What is the PMU?

In this first video of a five-part series, learn about Maxim’s exclusive peripheral management unit (or PMU) and how it offloads the CPU core to extend the battery life of applications. In the next video, “Using the Peripheral Management Unit–Part 2,” we’ll examine how the PMU works and how to set it up.

Learn More: MAX32620 User's Guide ›

Using the Peripheral Management Unit – Part 2: The Setup

In this next video of the series, take a closer look at how to configure Maxim’s peripheral management unit (PMU). Only three registers – a configuration register, a descriptor address register, and a loop counter – need to be programmed in each channel to setup the PMU. In the next video, “Using the Peripheral Management Unit–Part 3,” we’ll examine each of the PMU descriptors in detail.

Learn More: MAX32625 User's Guide ›

Using the Peripheral Management Unit – Part 5: Putting It All Together

In this last installment of our video series, examine the main() program as we pull all the pieces together. Watch the demo program run on the MAX32630 Evaluation Kit to see how the PMU can run tasks to offload the main CPU.

Learn More: See MAX32630 User's Guide ›

Secure Boot and Secure Download - Part 1: Protecting IoT Devices with Secure Authentication

Discover how malicious attacks can infect embedded firmware prevalent in many of today’s IoT or microcontroller-based devices. You’ll learn the ways attackers exploit vulnerabilities within the device and the importance of verifying the authenticity and validity of product firmware through secure boot and download. To learn more about the technologies behind secure authentication, watch the next video in the series, “Secure Boot and Secure Download - Part 2: Technologies Behind Embedded Security.”

Learn more: Secure Authenticators ›

Secure Boot and Secure Download - Part 2: Technologies Behind Embedded Security

Part 2 of this video series provides a high-level overview of the technologies in embedded system security. Learn how the cryptographic tools of Maxim’s secure authenticators help verify the authenticity and integrity of firmware distributed to IoT devices. To see a specific application of a cost-effective, hardware-based IoT security solution, watch the next video in the series, “Secure Boot and Secure Download - Part 3: Using the DS28C36.”

Learn more: App Note ›

Secure Boot and Secure Download - Part 3: Using the DS28C36

In this last video of the series, see how the DS28C36, a proven embedded security solution, helps address the threats that plague IoT devices. Learn how this DeepCover® secure authenticator can offload the system microcontroller by performing the heavy computational math required to prove the authenticity and integrity of firmware or data updates.

Learn more: DS28C36 ›

How to Set Up the MAX32625MBED Using the Mbed Online Development Environment

In this video, Venkatesh introduces the MAX32625MBED development platform and shows how to use it with the Mbed™ online development environment. He outlines how to compile and download a simple program and run it on the platform.

Learn more: MAX32625MBED ›

How to Set Up an Ultra-Low Power Real-Time Clock II Using the MAX32630FTHR

In this video, Mohamed makes an ultra-low power timekeeping circuit that consumes microwatts of power by combining a real-time clock (RTC) peripheral with the Deep Sleep mode of the MAX32630FTHR development platform.

Learn more: Low-power MAX32630FTHR ›

Digital PowerTool GUI Demo – Step 4: Device Tabs

In step 4, Karim explains the importance of the device-specific tabs of the MAXPOWERTOOL002 PowerTool GUI, used with our digital power controllers.

Learn more: MAXPOWERTOOL002 ›

CAN vs. RS-485: What’s the Difference?

Join Dave and Bob as they explore the similarities and differences between two key serial interface protocols, Controller Area Network (CAN) and RS-485. See both protocols on oscilloscopes using one of our RS-485 interface transceivers and our latest CAN transceiver. Watch as they zap the MAX13054A CAN transceiver shield board with electrostatic discharge (ESD) and a voltage fault to demonstrate the IC’s robust operation.

Learn more: CAN Transceivers ›

Learn the Fundamentals of IO-Link Technology

In this video, learn about the hardware, standards, and communication protocols for IO-Link® technology. IO-Link sensors, transceivers, and reference designs are presented to support modern industrial communications applications.

Learn more: IO-Link Transceivers and Binary Drivers ›

How to Measure Bioimpedance (Bio-Z) with the MAX30001EVSYS

In this video, Travis walks through the set-up of the MAX30001 evaluation system (MAX30001EVSYS) and demonstrates how to use the GUI to examine data from the bioimpedance channel, which shows respiration and heart rate.

Learn more and download GUI: MAX30001EVSYS ›

Digital PowerTool GUI Demo – Step 3: Dashboard

In step 3, Karim shows how to initiate the program once the MAXPOWERTOOL002 PowerTool GUI is installed. He then shows how to use the GUI with the MAX15301 and MAX15303 automatically compensated digital PoL controllers and demonstrates the functionality.

Learn more: MAXPOWERTOOL002 ›

How to Configure a Microcontroller for Deep Sleep Using the MAX32630

In this video, Mohamed discusses some of the low-power modes available on the MAX32630 microcontroller. After outlining the capabilities and benefits of Deep Sleep mode for his smartwatch application, he demonstrates how to toggle the power mode with the push of a button. For more information on how to use the MAX32630 as a timekeeping circuit, watch the video, "How to Set Up an Ultra-Low Power Real-Time Clock II Using the MAX32630FTHR."

Learn more: MAX32630 ›

How to Spatially Index 1-Wire® Sensors Using the MAXREFDES131 and DS18B20

In this video, Travis explains how to index the DS18B20 temperature sensor by its location within a 1-Wire® network. He then demonstrates how to configure the sensor using the GUI for the MAXREFDES131 1-Wire GridEYE sensor reference design.

Learn more: MAXREFDES131 ›

How to Prevent Battery Cloning Using the MAX17211EVKIT

In this video, Norberto explains why battery authentication is crucial for portable, battery-powered products. He demonstrates how to use the MAX17211 evaluation kit (MAX17211EVKIT) featuring the ModelGauge™ m5 fuel gauge with SHA-256 authentication to authenticate a rechargeable battery.

Learn more: MAX17211 ›

Introduction to the MAX40079/87 10MHz/42MHz Low Noise, Low Input Bias Current Op Amps

This video provides an introduction to the MAX40079, MAX40087, MAX40077, MAX40089, and MAX40078, which are wide band, low-noise, low-input bias current operational amplifiers that offer rail-to-rail outputs and single-supply operation down to 2.7V and up to 5.5V.  

Digital PowerTool GUI Demo – Step 2: Installation

In step 2, Karim shows how to download the latest MAXPOWERTOOL002 PowerTool GUI for use with our digital power controllers. He walks through the software installation step-by-step.

Learn more: MAXPOWERTOOL002 ›

Introduction to the MAX40016 4-Decade Current Sense Amplifier with Integrated Rsense Element

This video provides an introduction to the MAX40016, a very wide range current sense amplifier (CSA) with internal sense element that senses from less than 300μA to greater than 3A current range.  

Securely Manage Disposable Medical Accessories with DS28E36 and MAX66242

How can you be sure a disposable medical accessory is authentic and has not been used on another patient? Watch a demonstration of the DS28E36 and MAX66242 secure authenticators in a medical stapler application to learn how to securely manage data, calibration and end use. The demonstration also uses the MAX66300 NFC/RFID reader and PC software to emulate the medical procedure and perform patient identification and device authentication.

Learn more: DS28E36 ›

Learn more: MAX66242 ›

Learn more: MAX66300 ›

From Amplitude Modulation (AM) to Quadrature Amplitude Modulation (QAM)

Quadrature amplitude modulation (QAM) is a powerful and versatile technique for the efficient transmission of wireless data. This tutorial is an introductory but in-depth session to refresh your knowledge about the fundamentals of QAM and its advantages over heterodyne amplitude modulation (AM).

Learn more › QAM

Digital PowerTool GUI Demo – Step 1: Introduction

In step 1 of this video series, Karim introduces the PowerTool GUI, which works with the MAXPOWERTOOL002, a USB-to-PMBus interface dongle for digital power controllers. He demonstrates a typical hardware setup used with this software.

Learn more: MAXPOWERTOOL002 ›

Meet DARWIN: A New Breed of Low-Power IoT MCUs

Smarter. Leaner. Tougher. DARWIN MCUs are built to thrive in the evolving IoT. This new breed of IoT MCU combines Maxim’s wearable-grade power technology with the biggest embedded memories in their class and some of the most advanced embedded security in the world. Watch this video to learn how DARWIN MCUs can help you succeed in the fast-moving IoT market.

Learn more ›

MAX77650EVKIT Board Photo

Evaluation Kit for the MAX77650/MAX77651 (Ultra-Low Power PMIC with 3-Output SIMO and Power Path Charger for Small Li+)

Introducing the MAX32620FTHR Prototyping Platform

Learn how to get up and running quickly on your next project with the tiny MAX32620FTHR rapid development platform. The low-power Arm® Cortex®-M4 platform is loaded with connectors for peripherals, such as Adafruit feather wings, and a built-in bootloader that can be used in the Mbed® environment.

Learn more: MAX32620FTHR ›

Fundamentals of Industrial Control Devices

Learn about devices used in industrial control applications. This video walks through the details of the communication protocols and key components used in industrial control systems and provides example applications.

Learn More: Industrial ›

Educational Video – Industrial Digital Isolation

Learn about common data isolation technologies, why isolation is necessary and how to select the right digital isolator for your system.

Learn More › Digital Isolators

Fundamentals of Serial Transceiver Devices

Learn the differences between three popular serial transceivers: RS-232, RS-422 and RS-485. This video walks through the details of each communication protocol and provides example applications.

Learn More > Transceivers

Enhance Battery Life and Sound Quality for Hearables and Wearables with the MAX98090

Learn how the MAX98090 ultra-low-power stereo audio codec delivers the best audio quality with the lowest possible power for hearable and wearable devices using the FlexSound® digital signal processing (DSP) technology.

Learn More > MAX98090

Introducing the MAX32660 - Part 1

In part 1 of this 2-part series, explore the MAX32660 low-power Arm® Cortex®-M4 microcontroller with FPU for wearable and IoT sensors. Learn how this tiny, 96MHz, 32-bit microcontroller, with generous memory and peripherals, still manages to conserve power in active and sleep modes while remaining cost effective. In the next video, "Introducing the MAX32660 - Part 2 ," take a closer look at the MAX32660 Evaluation Kit.

Learn More > MAX32660

Introducing the MAX32660 - Part 2

In part 2 of this series, examine the MAX32660 evaluation kit and software using the Eclipse development environment. Learn how to download the board support package tool chain software, compile and run the Hello World debug code, and review the configuration of common functions, peripherals and ports.

Learn More > MAX32660-EVKIT

How to Shrink Your USB Type-C Battery Charger

 

How to Shrink Your USB Type-C Battery Charger
A highly integrated solution, as seen with the MAX77860 USB Type-C 3A switch-mode charger, dramatically reduces system complexity by integrating the charger, the power path, the Safeout LDO, ADC, and the USB-C CC and BC 1.2 detection in a small 3.9mm x 4.0mm, 0.4mm pitch, WLP package. OTG functionality is seamlessly integrated without the need for an extra inductor

Featured part: MAX77860
Read more ›

Introduction to the MAX40018 nanoPower Dual Op Amp in Ultra-Tiny WLP and TDFN Packages

This video provides an introduction to the MAX40018, a dual operational amplifier that features a maximized ratio of gain bandwidth (GBW) to supply current and is ideal for battery-powered applications such as portable instrumentation, portable medical equipment, and wireless handsets.

What is the Speaker Laser Characterization Process?

Greg walks through the DSM Laser Characterization process step-by-step including how to submit speakers and enclosures for laser characterization.

Learn more: DSM Laser Characterization ›

Using the MAX13054AESHLD Evaluation Kit

In this video, Carole explains how to quickly set up and operate the MAX13054AESHLD, the evaluation kit for the MAX13054A 2Mbps CAN transceiver with ±65V fault protection.

Learn more: MAX13054AESHLD ›

Fundamentals of GMSL SerDes Technology

Learn about the technology behind Gigabit Multimedia Serial Link (GMSL) Serializers/Deserializers (SerDes) used for high-speed data transmission. This video provides an introduction to GMSL technology, information on GMSL forward and reverse-channel architecture, and an overview of key GMSL features.

Learn More > GMSL

How to Set Up the MAX32630/MAX32631 Evaluation Kits in Eclipse

Venkatesh demonstrates how to set up the evaluation kits for the MAX32630 and MAX32631 ultra-low-power Arm® Cortex®-M4 microcontrollers for wearables using the toolchain software in the Eclipse development environment.

Learn More > MAX32630-EVKIT

Learn More > MAX32631-EVKIT

How to Setup the MAX32625MBED Board with the Arduino IDE

In this video, Venkatesh demonstrates how to set up the MAX32625MBED development platform in the Arduino® development environment, including instructions on how to configure the board support package.

Learn More > MAX32625MBED

How to Measure Temperature Using RTDs and the MAX31865EVKIT

In this video, Maebh explains the fundamentals of temperature sensing using resistance temperature detectors (RTDs). She also demonstrates how to use the evaluation kit for the MAX31865 RTD-to-Digital Converter to make temperature measurements.

Learn more ›

Fundamentals of RF and Wireless Communications

Learn about the basic principles of radio frequency (RF) and wireless communications including the basic functions, common specifications, and key parameters involved in defining and evaluating RF communications systems.

Learn More › Wireless and RF

Introduction to the MAX14882 5kVRMS Isolated CAN Transceiver with Integrated Transformer Driver

The MAX14882 isolated high-speed CAN transceiver improves communication and safety by integrating galvanic isolation between the CAN-protocol controller-side of the device and the physical wires of the CAN network.

Introduction to the DS28E83 DeepCover® Radiation Resistant 1-Wire Secure Authenticator

This video provides an introduction to the DS28E83, a radiation-resistant secure authenticator that provides a core set of cryptographic tools derived from integrated asymmetric (ECC-P256) and symmetric (SHA-256) security functions.

Understanding Power Losses in Buck Converters

Anthony examines the large power losses associated with the rectification diode of a traditional buck converter. He then shows how a synchronous buck converter, like the MAX17506 or MAX17503, can significantly improve efficiency, thermal performance, and reliability by replacing the diode with an integrated MOSFET.

Learn More > Himalaya Buck Converters

Introducing the MAX-HEALTH-BAND Heart Rate and Activity Monitor

See how the MAX-HEALTH-BAND evaluation and development platform, a wrist-worn heart rate and activity monitor, extracts raw PPG data or motion compensation algorithm output using a mobile app. Sudhir shows how the MAX-HEALTH-BAND, featuring the MAX86140 AFE and MAX20303 PMIC, streams HR data to a mobile app and explains how it collects, stores or exports raw data and/or algorithms for further validation or development.

Learn more ›

Introducing the MAX-ECG-MONITOR Wearable ECG and Heart Monitor

Watch the MAX-ECG-Monitor, a wearable ECG and Heart Monitor evaluation and development platform, in action as it collects and monitors ECG and heart rate data for clinical and fitness applications. Andrew shows how the MAX-ECG-MONITOR, featuring the MAX30003 ECG analog front-end, works with an Android-based application to gather raw data to develop custom algorithms or unique in-device apps for different use cases.

Learn more ›

How to Use the MAX79356 G3-PLC Sniffer Kit

In this video, Afshin demonstrates how to use the MAX79356 G3-PLC sniffer dongle, a lightweight test and monitoring device for G3-PLC powerline communication networks, to capture and analyze data and command packets on the powerline. He shows how to use the sniffer kit as a handheld test device in the field to check signal phase and quality.

Learn more: MAX79356 G3-PLC Sniffer Kit ›

Advancing Real-Time Health Monitoring with Maxim Technology

A health scare while he was a teenager led Arvind Thiagarajan to found HD Medical, which develops electronic stethoscopes that augment heart sounds with real-time visual displays of diagnostic waveforms. Learn how Thiagarajan and his team created their innovative technology using the MAX32620 ultra-low-power microcontroller, the MAX14690 battery charge management IC, the MAX1703 DC-DC converter, and Maxim battery monitors.

Learn more: HD Medical Success Story ›

What is DSM and How Does It Work?

Greg explains how Dynamic Speaker Management (DSM) Smart Amplifier technology can overdrive micro speakers safely and reliably, delivering 2.5x greater loudness and deeper bass response. Michael then demonstrates how a DSM-enabled micro speaker responds to lower frequencies and provides protection against overtemperature and over excursion using the DSM Sound Studio’s Tuning feature.

Learn more: Dynamic Speaker Management ›