Temperature Sensing

Description

There is a very wide range of temperature sensing and control applications in the world today and hence many design alternatives. This solution offers in-depth design information and circuits for building thermal sensing signal chains using the most popular thermal sensors.

Usually the first step in designing a thermal sensing and control system is to determine the temperature range that must be sensed as well as the operating environment. The next step is selecting a thermal sensor. There are four main type of thermal sensors: silicon, thermistor, RTD, and thermocouple. Maxim provides either complete signal chain solutions or integrated ICs that can take the thermal transducer signal, process it, and provide either an analog or digital communication path back to the control device.

Click the design considerations tab to gain an understanding of the key parameters and circuitry needed to build a temperature sensing function. Click the "circuits" or "block diagrams" tab to view reference designs and products suggested for use in various temperature sensing applications.


The first step in designing a temperature sensor circuit is to select the temperature transducer that you are going to use. To do this, you need to know the medium you are measuring (air, water, liquid, solid) and the temperature range that you are measuring. Then you need to know the accuracy of the measurements that you need to make over the measurement range.

Popular thermal transducers include:

  • Thermocouple (range of -180°C to +1300°C)
  • RTD (range -200°C to +900°C)
  • Thermistor (range: -50°C to +150°C)
  • Silicon Sensor (range -20°C to +100°C)

While the range of the sensor that you select must meet that of your application, additional selection criteria generally includes mounting options and cost of both the sensor and the supporting signal chain.

After the transducer is selected, the next step is determining how to extract a usable signal from the transducer and deliver that signal to a controller. The signal extraction circuitry is called the signal chain. For each transducer there are signal chain alternatives, including single chip solutions. Factors in selecting which signal chain to use include accuracy, flexibility, ease of design, and cost.

This page presents some essential design considerations for different popular temperature transducer types.

Thermocouples


Thermocouples are made by joining two wires of dissimilar metals. The point of contact between the wires generates a voltage that is approximately proportional to temperature. Characteristics include wide temperature range (up to +1800°C), low-cost (depending on package), very low output voltage (about 40µV per °C for a K type), reasonable linearity, and moderately complex signal conditioning. Thermocouples require a 2nd temperature sensor (cold-junction compensation) that serves as a temperature reference and signal conditioning requires a look-up table or algorithm correction.

This table shows the output voltage vs. temperature for popular thermocouple types:

Type Temperature Range (°C) Nominal Sensitivity ( µV/°C)
K −180 to +1300 41
J −180 to +800 55
N −270 to +1300 39

The curve below (Figure 1) shows voltage output over temperature range. The curve is reasonably linear, although it clearly has significant deviations from absolute linearity.

Figure 1. Type K thermocouple output voltage vs. temperature.
Figure 1. Type K thermocouple output voltage vs. temperature.

The diagram below shows the deviation from a straight-line approximation, assuming a linear output from 0°C to +1000°C for an average sensitivity of 41.28µV/°C. To improve accuracy, linearity correction can be done by calculating the actual value or by using a lookup table.

Figure 2. Type K thermocouple deviation from a straight-line approximation.
Figure 2. Type K thermocouple deviation from a straight-line approximation.

Measuring temperature with a thermocouple can be challenging if the temperature range is narrow because the output of the thermocouple is so low. It is also complicated because additional thermocouples are created at the point where the thermocouple wires make contact with the copper wires (or traces) that connect to the signal conditioning circuitry. This point is called the cold junction (see Figure 3).

Figure 3. Simple thermocouple circuit.
Figure 3. Simple thermocouple circuit.

A complete thermocouple-to-digital circuit is shown in Figure 4. A precision op amp and precision resistors provide gain to the thermocouple output signal. A temperature sensor at the cold junction location is monitored to correct for cold junction temperature, and an ADC provides output data at the resolution required. In general, calibration is necessary to correct for amplifier offset voltage, as well as resistor, temperature sensor, and voltage reference errors, and linearization must be performed to correct for the effect of the thermocouple's nonlinear temperature-voltage relationship.

Figure 4. Example of a thermocouple signal-conditioning circuit.
Figure 4. Example of a thermocouple signal-conditioning circuit.

Maxim manufactures a dedicated single chip thermocouple interface that performs the signal conditioning functions for a variety of thermocouple types, thus simplifying the design task and significantly reducing the number of components required to amplify, cold-junction compensate, and digitize the thermocouple's output. The IC is listed under the circuits tab.

Maxim Thermocouple Solutions

Maxim offers both single chip and discrete signal chain alternatives for use with thermocouple sensors. Maxim's single chip Thermocouple-to-Digital interface IC is the MAX31855.

Click on the circuits library tab to view IC solutions and the block diagrams tab for further circuit examples. Additional design information is available in the application notes listed under "Tech Docs."

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Resistance temperature detectors - RTDs


RTDs are essentially resistors whose resistance varies with temperature. Characteristics include a wide temperature range (up to 800°C), excellent accuracy and repeatability, reasonable linearity, and the need for signal conditioning. Signal conditioning for an RTD usually consists of a precision current source and a high-resolution ADC. While RTD are fairly standardized their cost can be high depending on the base material. Platinum is the most common RTD material and Platinum RTDs, referred to as PT-RTDs are the most accurate, other RTD materials include Nickel, Copper, and Tungsten (rare). RTDs are available in probes, in surface-mount packages, and with bare leads.

One factor in determining the useful range of the RTD is the RTD package. The RTD can be made by depositing platinum onto a ceramic substrate or using a platinum wire element housed in a package. The difference in expansion rate of the substrate or package versus the platinum element can cause additional error.

For PT-RTDs, the most common values for nominal resistance at 0°C are 100Ω (PT100), 500Ω(PT500) and 1kΩ (PT1000), although other values are available. The average slope between 0°C and +100°C is called alpha (α). This value depends on the impurities and their concentrations in the platinum. The two most widely used values for alpha are 0.00385 and 0.00392, corresponding to the IEC 751 (PT100) and SAMA standards.

The resistance vs. temperature curve is reasonably linear, but has some curvature, as described by the Callendar-Van Dusen equation:

R(T) = R0(1 + aT + bT2 + c(T - 100)T3)

More information about this equation can be found in the Maxim Thermal Handbook.

The diagram below, Figure 5, shows the curve of resistance vs. temperature for a PT100 RTD along with a straight-line approximation using α. Note that the straight-line approximation is accurate to better than ±0.4°C from -20°C to +120°C.


Figure 5. PT100 RTD resistance vs. temperature. Also shown is the straight-line approximation for 0°C to +100°C.

Figure 6, below, shows the error (in degrees) between the actual resistance and the value calculated from the straight-line approximation:


Figure 6. PT100 nonlinearity compared to linear approximation based on the slope from 0°C to +100°C.

Signal conditioning for a simple 2-wire RTD usually consists of a precision resistor (reference resistor) connected in series with the RTD. A current source that forces current through the RTD and the precision reference resistor, and across the inputs of a high-resolution ADC. The voltage across the reference resistor is the reference voltage for the ADC. The ADC's conversion result is simply the ratio of the RTD's resistance to the reference resistance. An example of a simple RTD signal-conditioning circuit is shown in Figure 7.

Several variations are common. The current source may be integrated into the ADC, or the current source may be eliminated and a voltage source may be used to provide bias to the RTD-RREF divider. This approach is not as common as providing a current supply because the voltage supply provides accurate results only when the wires connecting the RTD to circuit have very low resistance.

Figure 7. Simplified RTD signal-conditioning circuit.
Figure 7. Simplified RTD signal-conditioning circuit.

3-Wire or 4-Wire RTD Interface

When the RTD's cable resistance is significant (greater than a few mΩ for a PT100), a 3-wire or 4-wire RTD will generally be used. Four wires allow force and sense connections to the RTD to eliminate the effect of wire resistance. Three wires provide a compromise solution that partially cancels the effect of cable resistance. Linearization is generally done using a lookup table, although external linear circuits can provide good linearization over a limited temperature range.

To measure the resistance of an RTD, a small electric current (about 1 mA) must flow through the sensor to create the necessary voltage drop. The current causes the platinum element in the RTD to heat up above the temperature of the RTD's environment (also called Joule heating). The heating is proportional to the electric power (P=I2R) in the RTD and the heat transfer between the RTD sensing element and the RTD environment.

The most common standards for RTD tolerances are the American standard (ASTM E1137) Grades A and B and European standard IEC 751 Class A or B.

ASTM E1137 IEC 60751 (2008)
Grade Tolerance Class Tolerance
A ±(0.13 + 0.0017 |t|)  A (Class F0.15) ±(0.15 + 0.002 |t|) 
B ±(0.25 + 0.0042 |t|)  B (Class F0.3) ±(0.3 + 0.005 |t|)

Where |t| is the absolute value of temperature in °C

Maxim RTD Solutions

Maxim offers both single chip and discrete signal chain alternatives for use with RTD sensors. Maxim's single chip RTC-to-Digital interface is the MAX31865.

Click on the circuits library tab to view IC solutions and the block diagrams tab for circuit examples. Additional design information is available in the application notes listed under "Tech Docs."

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Thermistor


Thermistors are temperature-dependent resistors, usually made from conductive materials such as metal-oxide ceramics or polymers. The most common thermistors used for temperature sensing have a negative temperature coefficient (NTC) of resistance. Thermistors are available in probes, in surface-mount packages, with bare leads, and in a variety of specialized packages.

Characteristics include moderate temperature range (generally up to +150°C, though some are capable of much higher temperatures), low-to-moderate cost (depending on accuracy), poor but repeatable linearity. The linearity of a thermistor varies significantly over temperature. Over a range of 0° to 70°C thermistor non-linearity can be ±2°C to ±2.5°C while over a range 10° to 40°C typical non-linearity can be ±0.2°C.

A simple, common approach to using a thermistor is to use a voltage divider as shown in Figure 8, where a thermistor and fixed-value resistor form a voltage divider whose output is digitized by an analog-to-digital converter (ADC).

Figure 8. This basic circuit shows how a thermistor can interface to an ADC. Resistor R1 and the thermistor form a voltage divider with a temperature-dependent output voltage.
Figure 8. This basic circuit shows how a thermistor can interface to an ADC. Resistor R1 and the thermistor form a voltage divider with a temperature-dependent output voltage.

NTC thermistors have a large negative temperature coefficient over wide temperature ranges. The relationship between resistance and temperature for a common NTC is shown in Figure 9. This is an issue for both linear and logarithmic correction over wide temperature ranges.


Figure 9. Resistance vs. temperature curves for a standard NTC. Nominal resistance is 10kΩ at +25°C. Note the nonlinearity and large relative temperature coefficient of curve (a). Curve (b) is based on a logarithmic scale and also exhibits significant nonlinearity.

An NTC's nonlinearity over a wide temperature range can affect the choice of the ADC selected to digitize the temperature signal. Since the slope of the curves in Figure 9 decreases significantly at temperature extremes, the effective temperature resolution of any ADC used with the NTC thermistor is limited at those extremes and this often requires the use of a higher resolution ADC.

Combining an NTC with a fixed resistor in a voltage-divider circuit like the one in Figure 8 provides some linearization, as shown in Figure 10. By selecting an appropriate value for the fixed resistor, the temperature range for which the curve is most linear can be shifted to meet the needs of the application.


Figure 10. Making an NTC voltage-divider, as in Figure 9, helps to linearize the NTC's resistance curve over a limited temperature range. The voltages on the NTC and the external resistor, R1, are shown as a function of temperature. Note that the voltage is roughly linear from 0°C to +70°C.

For wide temperature range applications a common approach is to use the Steinhart–Hart equation. This provides a third order approximation. The error in the Steinhart–Hart equation is generally less than 0.02⁰C over a measurement range of 200°C range.

More information about Steinhart-Hart equation can be found in the Maxim Thermal Handbook.

Maxim Thermistor Solutions

Maxim manufactures a few different single chip thermistor based digital output ICs. While the MAX31865 was designed for use with RTDs, it is also a very good choice for use with a thermistor.

Click on the circuits library tab to view IC solutions and the block diagrams tab for circuit examples. Additional design information is available in the application notes listed under "Tech Docs."

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Silicon


Silicon temperature sensors are available with analog or digital outputs. While the range of a silicon sensor is limited, they are easy to use and many have additional features like thermostat functions.

Analog Temp Sensors

An analog temperature sensor is useful in applications where the output needs to be sent through a current loop to a monitoring device. Digital outputs can also be converted in this case, but then the signal goes through two extra conversion steps.

Analog temperature sensor ICs use the thermal characteristics of bipolar transistors to develop an output voltage or, in some cases, current, that is proportional to temperature.

The simplest analog temperature sensors have just three active connections: ground; power supply voltage input; and output. Other analog sensors with enhanced features may have additional inputs or outputs such as a comparator or voltage reference output.

Figure 11 shows a curve of output voltage vs. temperature for a typical analog temperature sensor, the MAX6605. Figure 12 shows the deviation from a straight line for this sensor. From 0°C to +85°C, the linearity is within about ±0.2°C, which is quite good compared to thermistors, RTDs, and thermocouples.

Figure 11. Output voltage vs. temperature for the MAX6605 analog temperature-sensor IC.
Figure 11. Output voltage vs. temperature for the MAX6605 analog temperature-sensor IC.


Figure12. The MAX6605 output voltage deviation from a straight line. Linearity from 0°C to +85°C is approximately ±0.2°C.

Analog temperature sensors can have excellent accuracy. For example, the DS600 has a guaranteed accuracy of ±0.5°C from -20°C to +100°C. Other analog sensors are available with larger error tolerances, but many of these have very low operating current (on the order of 15µA, max) and are available in small packages (e.g., SC70).

Digital Temperature Sensors

Integrating an analog temperature sensor with an ADC is an easy way to create a temperature sensor with a direct digital interface. Such a device is normally called a digital temperature sensor, or a local digital temperature sensor. "Local" refers to the fact that the sensor measures its own temperature, as opposed to a remote sensor that measures the temperature of an external IC or discrete transistor.

Figure 13 shows block diagrams for two digital temperature sensors. Figure 13a illustrates a sensor that simply measures temperature and clocks the resulting data out through a 3-wire digital interface. Figure 13b shows a sensor that includes several additional features, such as over-/under temperature outputs, registers to set trip thresholds for these outputs, and EEPROM.


Figure 13. Block diagrams of local digital temperature sensors. (a) Simple sensor with serial digital output. (b) Sensor with additional functions, such as over-/under temperature alarm outputs and user EEPROM.

One advantage of using a digital temperature sensor is that all of the errors involved in digitizing the temperature value are included within the sensor's accuracy specifications. In contrast, an analog temperature sensor's specified error must be added to that of any ADC, amplifier, voltage reference, or other component that is used with the sensor. A good example of a very high-performance digital temperature sensor is the MAX31725, which achieves ±0.5°C accuracy across a temperature range of -40°C to +105°C. The MAX31725 can be used over a range of -55°C to +125°C temperature range and provides a maximum temperature error of just ±0.7°C with a 16-bit (0.00390625°C) resolution.

Most digital temperature sensors include one or more outputs that indicate that the measured temperature has gone beyond a preset (usually software-programmable) limit. The output may behave like a comparator output, with one state when temperature is above the threshold and the other state when temperature is below the threshold. Another common implementation is for the output to behave as an interrupt that is reset only in response to an action by the master.

Digital temperature sensors are available with a wide variety of digital interfaces including I2C, SMBus™, SPI™, 1-Wire®, and PWM.

Maxim Analog and Digital Silicon-Based Temperature Solutions

Maxim offers a variety of silicon-based temperature sensors with analog or digital output.

Click on the circuits library tab to view IC solutions and the block diagrams tab for circuit examples. Additional design information is available in the application notes listed under "Tech Docs."

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Delivering Tiny PoE Devices

 

“The Maxim peak-current-mode controller is only 3mm x 3mm. Because of its size and its high level of integration, we were able to reduce our whole module size by about half.”
 -Devesh Agarwal, CEO, Infomart


Featured products: Maxim peak-current-mode controller

Read Their Story ›

Boosting Sight for the Visually Impaired

 

“It’s all the little things that Maxim helped us with which add up to make a significant difference.”
 -Patrick Antaki, Co-Founder and President, Evergaze


Featured products: Maxim lens driver, MAX44009, MAX8834, MAX77818, Maxim overvoltage protector ICs

Read Their Story ›

Designing Flexible, Long-Range Wireless IoT Sensors

 

"Working with the Maxim team allowed us to accelerate things and, in aggregate, get ahead of schedule by nearly a month.”
 -Steve Kilts, CEO, Radio Bridge


Featured product: MAX31856

Read Their Story ›

Educating and Empowering Musicians

 

"The Maxim team has saved some mistakes that would have led to extra prototyping cycles. We expect our finished guitar will have long battery life and provide accurate data on remaining charge.”
 -Bobcat Cox, Chief Technology Officer, Zivix


Featured products: MAX14636, MAX14699, MAX8903C, MAX17260, MAX38643, and MAX38902E

Read Their Story ›

Do-It-Yourself IoT Chips

 

"The MAX77734 is a great chip for managing different power rails in wearables and space-constrained designs.”
-Omar Alnaggar, Director of Hardware Engineering, zGlue


Featured product: MAX77734

Read Their Story ›

Automating Patient Glycemic Control

 

"Maxim’s security ICs, including the DS28E83 and DS28E38 secure authenticators, enable us to ensure that the medication cartridges for our artificial pancreas will be used as intended and deliver the right dosages to the right patients.”
 -Jeff Valk, CEO, Admetsys


Featured products: DS28E83, DS28E38

Read Their Story ›

Redefining Motion Capture

 

"Maxim ICs are making our products work in a more stable and reliable manner.”
-Dr. Tristan RuoLi Dai, CTO, Noitom


Featured products: MAX17224, MAX14841E, MAX809S, MAX14527, MAX8887, DS3231M, MAX8881

Read Their Story ›

Creating High-Quality Smart Metering Solution

 

"MAX22445 helped us pass meter type tests with more stringent requirements than IEC.”
 -Joe Leong Kok Keen, Staff Design Engineer, Hardware, EDMI


Featured product: MAX22445

Read Their Story ›

Facilitating Reliable Semiconductor Production

 

"Maxim provides highly integrated functions and performance that our customers require with a reasonable price.”
 -Byoung Gi Kim, CTO, R&D, Digital Frontier


Featured product: MAX9972

Read Their Story ›

Fully Integrated Synchronous Buck Converter

Smart Building System

Building automation technology

Power management ICs help support effective building automation technologies.

36V, 600mA Mini Buck Converter with 3.5µA IQ

MAX20075

Synchronous buck with integrated high-side and low-side switches delivers up to 0.6A from 3.5V to 36V input, while using only 3.5µA quiescent current at no load.

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Peripheral Module for ±5ppm, I2C Real-Time Clock

DS3231MPMB1

Interfaces the DS3231M RTC low-cost and extremely accurate RTC to any system that utilizes Pmod™-compatible expansion ports configurable for I²C.

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Evaluation System for Precision Thermocouple to Digital Converter with Linearization

MAX31856EVSYS

Includes MAX31856PMB1 peripheral module, adaptor board for communication with the software and K-type thermocouple.

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Industry's Only ASIL-Grade Camera Protector with integrated I2C-Based Diagnostics

MAX20087

Dual/quad camera power protector ICs deliver up to 600mA load current to each of their four output channels.

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Evaluation Kit for I2C Temp Sensor with ±2°C Accuracy Low-Power I2C Temperature Sensor in WLP Package

MAX31875EVKIT

Includes GUI that provides communication over I2C with an on-board master IC.

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Serial Communications Module for Evaluation Kits

DS3900P2EVKIT

Provides bidirectional communication with 2-wire and 3-wire devices using a PC's serial port to evaluate a wide variety of ICs.

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Ultra-Small 3.2MHz Dual 500mA Versatile PMIC for Camera Modules

MAX20019

2.2MHz and 3.2MHz dual step-down converters with integrated high-side and low-side MOSFETs.

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2.2MHz Sync and Dual Step-Down Converters

MAX20014

OUT1 boosts the input supply up to 8.5V at up to 750mA, while two synchronous step-down converters operate from a 3.0V to 5.5V input voltage range and provides a 0.8V to 3.8V output voltage range at up to 3A.

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36V, 600mA Mini Buck Converter with 3.5µA IQ

MAX20076

Synchronous buck with integrated high-side and low-side switches delivers up to 0.6A from 3.5V to 36V input, while using only 3.5µA quiescent current at no load.

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Evaluation Kit for WPC/PMA Dual Mode Wireless Power Receiver

MAX77950EVKIT

Wireless power receiver that operates using near-field magnetic induction when coupled with a WPC or PMA transmitter and provides output power up to 12 watts.

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Evaluation Kit for 4.5V to 42V, 300mA uSLIC Power Module for 3.3V Output

MAXM15462EVKIT

Integrated power solution providing 3.3V from a wide input range of 4.5V to 42V with up to 300mA of current.

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4V to 42V, 100mA, Compact Step-Down Power Module

MAXM17532

The MAXM17532 is a step-down DC-DC power module built in a compact uSLICTM package. The MAXM17532 integrates a controller, MOSFETs, an inductor, as well as the compensation components. The device operates from an input voltage of 4.0V to 42V, supports an adjustable output voltage from 0.9V to 5.5V, and supplies up to 100mA of load current. The high level of integration significantly reduces design complexity, manufacturing risks and offers a true “plug and play” power supply solution, hence reducing the time-to-market.

Evaluation Kit for 4V to 42V, 100mA uSLIC Power Module for 5V Output

MAXM17532EVKIT

Integrated power solution providing 5V from a wide input range of 10V to 42V with up to 100mA of current.

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Arm Cortex-M4F Development Platform with Expansion Connectors for Battery-Powered Devices

MAX32620FTHR

Mbed-enabled development platform for the MAX32620 ultra-low-power microcontroller. On-board PMIC, fuel gauge, peripherals, and Pmod™ connectors enable rapid development with a small 0.9in x 2.0in board.

Evaluation Kit for the MAXM17575 5V Output Application

MAXM17575EVKIT

Integrated power solution providing 5V from a wide input range of 7.5V to 60V with up to 1.5A of current.

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Evaluation Kit for the MAXM17761 5V Output-Voltage Application

MAXM17761EVKIT

Integrated power solution providing 5V from a wide input range of 4.5V to 76V with up to 1A of current.

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Evaluation Kit for the MAXM17574 5V Output Application

MAXM17574EVKIT

Integrated power solution providing 5V from a wide input range of 10V to 60V with up to 3.0A of current.

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3µA 1-Cell/2-Cell Fuel Gauge with ModelGauge

MAX17048EVKIT

Smallest, lowest power fuel gauge with proven, voltage-only ModelGauge algorithm.

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DeepCover Secure Authenticator Demonstration Kit

MAXAUTHDEMO

Hardware/software platform that demonstrates the functional capabilities of Maxim's Secure Authenticators in genuine use-case scenarios.

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Stand-Alone ModelGauge m5 Fuel Gauges with SHA-256 Authentication EZ

MAX17201GEVKIT

Offers nonvolatile memory (NVM) for pack-side, single-cell or multi-cell applications.

Learn more ›

7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ

MAX17055XEVKIT

Combines coulomb counting and voltage fuel gauging for highest SOC accuracy.

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18-Bit Precision Data Acquisition System

MAXREFDES74

Performs High-Speed, Precision Data Acquisition with High-Accuracy, Low-Power Data Converters.

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Evaluation Kit for the MAXM17503 in a 5V/2.5A Output Application

MAXM17503EVKIT

Integrated power solution providing 5V from a wide input range of 11V to 60V with up to 2.5A of current.

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Evaluation Kit for the MAXM17502 in a 5V/1A Output Application

MAXM17502EVKIT

Provides 5V from a 12V to 60V input and delivers up to 1A at over 84% efficiency.

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Evaluation Kit for the MAX1510

MAX1510EVKIT

Evaluates the Low-Voltage DDR Linear Regulator

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Evaluation Kit for the MAX17651

MAX17651EVKIT

Demonstrates the 60V, 100mA, Ultra-Low Quiescent Current, Linear Regulator

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16-Bit Four-Channel Analog Input Micro PLC Card

MAXREFDES61

Complete Analog Front-End for Next-Gen Ultra-Small PLCs with Isolated Power and Data.

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Isolated Power Supply Reference Design

MAXREFDES9

3.3V to 15V Input, ±15V (±12V) Output Isolated Power for Industrial and Medical Applications

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Evaluation Kit for MAXM17515 in a 1.5V/5A Output Application

MAXM17515EVKIT

Provides 1.5V from a 2.4V to 5.5V input and delivers up to 1.5A at over 91% efficiency.

Learn more ›

MAX30205 Evaluation System

MAX30205EVKIT

System to evaluate the MAX30205 human body temperature sensor. Includes a USB-to-I2C controller and GUI.

Learn more ›

Complete Evaluation Board for Ultra-Low Power Cortex-M4F Microcontroller

MAX32620-EVKIT

Power-optimized Arm® Cortex®-M4F. Optimal peripheral mix provides platform scalability. On-board bluetooth® 4.0 BLE transceiver with chip antenna.

Evaluation Board for Defibrillation/Surge/ESD Protector for Medical and Industrial Applications

MAX30034EVKIT

Fully tested board includes MAX30034 to absorb repetitive defibrillation and other high-energy pulses.

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Analog-Rich Arm Cortex-M3 Development Platform

MAX32600MBED

Mbed™-enabled evaluation system for the MAX32600 ultra-low-power micro with advanced analog features and hardware security. Arduino connectors and prototyping space enable rapid development.

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Cryptographic Controller for Embedded Devices Development Platform

MAXQ1061 Evaluation Kit - Evaluates: MAXQ1061

Credit card-sized socketed board allows for communication and power through a 10-pin connector to an optional host adapter.

Learn more ›

Smart Force Sensor

MAXREFDES82

Industrial sensor displays weight and center of mass for objects placed on the platform, up to 780g.

Learn more ›

Wearable, Galvanic Skin Response System

MAXREFDES73

GSR measurement detects human skin impedance under different situations.

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GPS/GNSS Ultra-Low-Noise-Figure LNA

MAX2667EVKIT

Lowest noise figure GPS LNA delivers high gain and high linearity in a tiny package.

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Evaluation Kit for the MAX44298

MAX44298EVKIT

Assesses the MAX44298 precision power monitor with very low offset for low-side monitoring.

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Evaluation Kit for GPS/GNSS Ultra-Low Current LNA

MAX2679/MAX2679B EV Kits - Evaluates: MAX2679/MAX2679B

Enables testing of RF performance with no additional circuitry. Provides 50Ω SMA connectors for inputs and outputs.

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40MHz to 4GHz Linear Broadband Amplifier

MAX2615

High-performance broadband amplifier with exceptional gain flatness in an 8-pin TDFN.

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DeepCover Embedded Security in an IoT: Public-Key Secured Data Paths

MAXREFDES155

Secures IoT systems with a public-key-based authenticated data chain from a protected sensor node to a web server.

24-Bit Weigh Scale

MAXREFDES75

High-accuracy weigh scale reference design performs small-signal 24-bit measurements, and produces a weighted 0 to 10V output proportional to the input signal.

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Evaluation Kit for the MAX44284

MAX44284EVKIT

Demonstrates the high-precision real-time current monitoring of the MAX44284 current-sense amplifier.

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High-Precision, Long-Battery Life Heat/Flow Meter

MAXREFDES70

Low-power, ultrasonic time-of-flight reference design for high-accuracy liquid flow measurement.

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Arm Cortex-M4F Development Platform Optimized for Bluetooth®-Based Battery-Powered Devices

MAX32630FTHR

Mbed-enabled development platform for the MAX32630 ultra-low-power microcontroller. On-board PMIC, Bluetooth, and peripherals enable rapid development with a small 0.9in x 2.0in board.

Learn more ›

Health Sensor Platform

MAXREFDES100

mbed-enabled sensor platform for rapid evaluation of wearable health and fitness solutions. Measures motion, temperature, biopotential, pulse oximetry, and heart rate.

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4–20mA 2-Wire Current-Loop Sensor

MAXREFDES15

Ultra-low power, high-accuracy loop-powered sensor transmitter that connects to any standard PT1000 resistance sensor and converts the linearized temperature to a 4–20mA current signal.

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4–20mA Loop-Powered Temperature Sensor with Hart

MAXREFDES16

2-wire, loop-powered smart temperature transmitter solution for temperature measurement. Works with any type of RTD, from PT100 to PT1000.

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Isolated 24V to 3.3V 33W Power Supply

MAXREFDES121

Isolated, industrial power-supply reference design with an efficient active-clamp topology design with 24V input.

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ECT/EPT Current Fault Sensor

MAXREFDES38

High-accuracy analog front-end for ECT/EPT low-power sensors to increase precision of grid health data and fault location.

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Universal Input Micro PLC

MAXREFDES67

Universal analog input accepts analog voltage and current, all RTD configurations and thermocouples to collect high-accuracy analog data using a single architecture.

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MAXREFDES150: POCKET IO PLC DEVELOPMENT PLATFORM

MAXREFDES150

Industry 4.0, the fourth revolution in manufacturing and process automation, poses a considerable challenge for PLC design engineers who are required to pack more functionality into enclosures that keep getting smaller.

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Isolated, 24V to 12V, 20W Power Supply Reference Design

MAXREFDES113

Compact, 24V input, flyback converter module with 12V at 1.6A output and pre-qualified transformers.

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Non-isolated 24V to 5.1V, 20W Power Supply

MAXREFDES125

High-efficiency, 20W power supply for industrial and broad power-supply applications.

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Isolated, 24V to 5V, 10W Power Supply Reference Design

MAXREFDES114

Compact, 24V input, forward converter module with 5V at 2A output and pre-qualified transformers.

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Heart-Rate and Pulse-Oximetry Monitor

MAXREFDES117

A low power, optical heart-rate module complete with integrated red and IR LEDs, and a power supply.

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Dual-Channel Current Sense Peripheral Module

MAXREFDES77

Interfaces the MAX44285 dual-channel high-side current-sense amplifier to any system that utilizes Pmod™-compatible expansion ports.

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Non-isolated 5V/2.5A PoE Powered Device Power Supply

MAXREFDES98

This non-isolated PoE powered device design combines a PD controller and buck converter on a 1.2 in2 board. It accepts 36V to 57V input with 5V output up to 2.5A.

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Power Amplifier Biasing through MAX11300 PIXI IC

MAXREFDES39

This design uses a MAX11300 programmable mixed-signal I/O (PIXI™), to bias and monitor a power amplifier for an RF base station.

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IO-Link® 16 Channel Digital Input Hub

MAXREFDES36

This IO-Link® 16-channel digital input reference design includes a 16-bit micro with IO-Link device stack and fits on a small 53.75mm x 72mm PCB.

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Pocket IO™ PLC Development Platform

MAXREFDES150

Integrates 30 industrial IOs for lower heat dissipation and faster throughput in less than ten cubic inches.

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Secure Authentication Design with 1-Wire ECDSA and Xilinx Zynq SoC

MAXREFDES44

Protects IP and authenticates peripherals to Xilinx Zynq™ FPGAs.

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SHA-256 Secure Authentication Design

MAXREFDES34 (Alcatraz)

This design implements SHA-256 authentication function using the 1-Wire protocol.

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Turnkey PCI-PTS Mobile POS (MPOS) Terminal

MPOS-STD2

A complete mPOS solution, pre-evaluated by security labs for compliance with PCI-PTS 4.0 standards.

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Non-isolated 12V/1A PoE Powered Device Power Supply

MAXREFDES108

This non-isolated PoE powered device design combines a PD controller and buck converter on a 1.2 in2 board. It accepts 36V to 57V input with 12V output up to 1A.

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Isolated 24V to 5V, 2W Flyback Power Supply

MAXREFDES111

Industrial power-supply reference design features an efficient flyback topology with 24V input, and a 5V output at 2W of power (0.4A)

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Smart Force Sensor

MAXREFDES82

Operates as Both a Weigh Scale and a Touch Interface with Force Sensing for Industrial Applications.

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3.3V and 5V PoE Powered Device

MAXREFDES31 (Pasadena)

This design is an IEEE 802.3af/at compliant. Powered Device (PD). In addition to regulating power received over Ethernet, device can also be powered from a wall adapter.

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4-Port IO-Link Master

MAXREFDES79

4-Port IO-Link Master Reference Design Description: Four IO-Link ports allow for simultaneous testing of four different sensors or actuators.

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Security Short Subjects: Asymmetric Authentication Details

Review details of asymmetric key cryptography including ECDSA (Elliptic Curve Digital Signature Algorithm) and learn how it is used in asymmetric key-based authentication. See why asymmetric key authentication is vital for applications such as communication, IP protection, and medical device authentication.

Learn more: Secure Authentication ›

Security Short Subjects: Symmetric Authentication Details

Examine more of the details of symmetric key cryptography for authentication applications including the concepts of nonce, random numbers, and secure hash. You’ll learn how to use secure hash for authentication.

Learn more: Secure Authentication ›

Security Short Subjects: Asymmetric Authentication

Learn how asymmetric key cryptography is used for authentication and review the concepts of key generation and encryption. You will learn more about digital signatures and how they are used for secure authentication.

Learn more: Secure Authentication ›

Security Short Subjects: Secure Firmware Download for Embedded Systems

Learn how firmware can be securely downloaded to a remote system and see how ECDSA key pair generation and SHA-256 algorithm are used for this purpose.

Learn more: Secure Authentication ›

Security Short Subjects: Symmetric Cryptography

Learn the basics of symmetric cryptography and how it is used to encrypt and decrypt data. Examine concepts of plaintext and cyphertext and see how a secret key sends and receives encrypted data.

Learn more: Secure Authentication ›

Security Short Subjects: Asymmetric Cryptography

Learn the basics of asymmetric key cryptography and see how it is used to encrypt and decrypt data. Review the concepts of public and private keys and learn how to use a key pair to send and receive encrypted data. The differences between symmetric and asymmetric key are also discussed along with the concept of a cipher suite.

Learn more: Secure Authentication ›

Security Short Subjects: The Basics of Authentication

Examine the basics of secure authentication and discover why one-way authentication is not always ideal. You’ll learn how identification and secure authentication work together to provide better cybersecurity.

Learn more: Secure Authentication ›

Security Short Subjects: Symmetric Key Authentication

We’ll examine the use of symmetric key cryptography for authentication applications and learn more about the concepts of shared keys, Nonce, and secure hash.

Learn more: Secure Authentication ›

Provide a Safe Power Path from the Car Battery to Remote Cameras

 

Provide a Safe Power Path from the Car Battery to Remote Cameras
Transmission of power and data on long coaxial cable bundles requires protection from various short-circuit modes (STG, STB). Remote cameras are small and require space- and power-efficient solutions. The MAX20039 buck-boost converter is an effective supply for power-over-coax. The MAX20087 quad power camera pro­tector is a compact, efficient protection IC. The dual MAX20019 cascade buck converter configuration delivers high efficiency in a small space. This triplet of ADAS ICs effectively provides power and protection to the path from the car battery to the remote cameras.

Featured parts: MAX20039, MAX20040, MAX20087, MAX20019
Read more ›

How to Efficiently Power Your Smart Gas/Water Meter

 

How to Efficiently Power Your Smart Gas/Water Meter
Smart meters operate for 10 to 20 years of time remotely and untethered, relying on powerful non-rechargeable lithium-thionyl-chloride batteries. They present a complex power-management design problem with energy sources that include batteries and supercapacitors. In this design solution, we discussed the challenges of powering a smart-meter wireless RF power amplifier. The solution is based on the MAX8815A, an efficient, low shutdown current and compact boost converter, which delivers the required peak current with the help of a supercapacitor.

Featured part: MAX8815A
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Introduction to the MAX40077 MAX40078 MAX40089 Single/Dual/Quad Ultra-Low Input Bias Current, Low Noise Amplifiers

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

Introduction to the MAX40242 20V, Low Input Bias-Current, Low-Noise, Dual Op Amplifier

This video provides an introduction to the MAX40242 which provides a combination of high voltage, low noise, low input bias current in a dual channel and features rail-to-rail at the output.

Ultra-Low-Power, Stereo Audio Codec

MAX9867

Includes stereo differential microphone inputs integrated with an auxiliary battery-measurement ADC and capacitorless headphone amps.

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The Ins and Outs of Voltage Supervisor ICs

Low-Power Supervisory Circuit with Battery Backup.

The Ins and Outs of Voltage Supervisor ICs

The MAX16140 4-bump WLP Package.

Boosted Class D Amplifier with Automatic Level Control

MAX98502

Operates at 2MHz and delivers constant 2.2W output power without collapsing battery.

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Ultra-Low Power Stereo Audio Codec

MAX98090

High-performance, ultra-low power consumption, and small footprint make it ideal for portable applications.

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Mono 3.2W Smallest Class D Amplifier

MAX98304

0.95mA IQ at 3.7V (1.2mA at 5V), offers five selectable gain settings set by a single gain-select input (GAIN) in 1mm x 1mm package.

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Boosted Class-D Amplifier with Integrated Dynamic Speaker Management

MAX98390

Dynamic Speaker Management (DSM) provides louder and deeper audio while increasing micro speaker sound clarity.

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Tiny, Low-Cost, PCM Class D Amplifiers with Class AB Performance

MAX98357A

Easy-to-use, low-cost, digital PCM input amplifier provides industry-leading Class AB audio performance with Class D efficiency.

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High-Sensitivity Pulse Oximeter and Heart-Rate Sensor

MAX30102

Pulse Oximeter and Heart-Rate Biosensor for Wearable Health

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1A Linear Li+ Battery Charger with Integrated Pass FET and Thermal Regulation in 2mm x 2mm TDFN

MAX8808X/Y/Z

Simplest and Smallest Charging Solution for Hand-Held Equipment

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High-Efficiency Buck-Boost Regulator

MAX77801

The MAX77801 is a high-current, high-efficiency buck-boost targeted to mobile applications that use a Li-ion battery or similar chemistries. The MAX77801 utilizes a four-switch H-bridge configuration to support buck and boost operating modes. Buck-boost provides 2.60V to 4.1875V of output voltage range and up to 2A output current.

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Wearable Charge Management Solution

MAX14676

This battery-charge-management solution includes a linear battery-charger with 28V tolerant input, smart power control, and several power-optimized peripherals. A boost regulator with 5V to 17V output, and 3 programmable current sinks can drive a variety of LED configurations.

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Industry's Smallest 1.55A 1-Cell Li+ DC-DC Charger

MAX8971

This device charges quickly with minimal heat generation. It charges from variety of adapters and maximizes Safety featuring JEITA-compliant temperature monitoring and withstands transient inputs up to 22V.

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ModelGauge m3 Fuel Gauge

MAX17047/MAX17050

These battery fuel gauges provide excellent short-term and long-term accuracy by using both coulomb counting and voltage-based ModelGauge algorithms. ModelGauge m3 cancels offset accumulation error in the coulomb counter while providing better short-term accuracy than any purely voltage-based fuel gauge.

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USB/AC Adapter, Li+ Linear Battery Charger

MAX8606

This complete 1-cell Li+ battery charge-management IC operates from either a USB port or AC adapter. It integrates a battery disconnect switch, current-sense circuit, PMOS pass element, and thermal-regulation circuitry, while eliminating the external reverse-blocking Schottky diode, to create a simple and small charging solution.

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3µA 1-Cell Fuel Gauge with ModelGauge

MAX17048

Maximize Battery Run-Time with Industry's Smallest Size, Lowest Power Fuel Gauge

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7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ

MAX17055

ModelGauge m5 EZ Eliminates Battery Characterization

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7µA 1-Cell Fuel Gauge with ModelGauge m5 EZ

MAX17055

Low IQ fuel gauge for precision measurements of current, voltage, and temperature.

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Wearable Power Management Solution for Primary Cells

MAX20310

Wearable Power Management for Single-Cell Zinc Air, Silver Oxide, and Alkaline Battery Architectures

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Wearable Charge-Management Solution

MAX14690

Extends Battery Life of Wearable Electronics

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WPC/PMA Dual-Mode Wireless Power Receiver

MAX77950

Power receiver IC provides precision output current and voltage-sensing scheme over entire load range.

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Secure Authenticator with SHA-256 Coprocessor

DS2465

Secure authenticator features 1-Wire master with SHA-256 and memory functionality.

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Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM

DS28E15

Secure authenticator features factory-programmed, unique 64-bit ROM identification number.

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Secure Authenticator with Elliptic-Curve Public-Key Authentication

DS28C36

Secure authenticator features true random number generator, secured EEPROM, and ROM ID

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Ultra-Low-Power PMIC with 3-Output SIMO

MAX77650

PMIC features SIMO buck-boost regulator and a 150mA LDO.

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Secure Coprocessor with Elliptic-Curve Public-Key Authentication

DS2476

Secure ECDSA and HMAC SHA-256 coprocessor companion to the DS28C36.

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Dual Input, Power Path, 3A Switching Mode Charger

MAX77818

High-performance companion PMIC with ModelGaugeTM m5 fuel gauge technology.

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Why Shrinking Sizes of RTCs Is Good News for Your Portable Designs

Layout of crystal with integrated capacitors (left) and two integrated capacitors with crystal equivalent circuit (right).

Smartwatch clock

Small, low-power RTCs are ideal for compact, portable designs.

Introduction to the MAX17301 and MAX17311: 1-Cell ModelGauge m5 EZ Fuel Gauge with 2-Level Protector and SHA-256 Authentication

This video provides an introduction to Maxim’s 1-Cell ModelGauge m5 EZ Fuel Gauge with 2-Level Protector and SHA-256 Authentication—the MAX17301 and MAX17311.

How to Extend the Run-Time of Your DSLR/DSLM Camera Design

 

How to Extend the Run-Time of Your DSLR/DSLM Camera Design
A POL system approach to power distribution within a DSLR/DSLM digital camera saves power by minimizing the PCB traces losses. Scalability is another POL advantage, as a number of small buck regulators can be added or subtracted as needed, depending on the compexity of the digital camera. Accordingly, we propose a high-efficiency, compact buck converter as the basic building block for the digital camera POL architecture.

Featured part: MAX77503
Read more ›

Introduction to the DS28C40 Deep Cover Automotive I2C Authenticator

This video provides an introduction to Maxim’s Secure Authenticator for Automotive – the DS28C40.

Introduction to the MAXM15062-63-64-65-66-67-MAXM15462-63-64-65-66-67-MAXM17901-03-04-05-06 4.5V to 24V, 42V, 60V 300mA Himalaya uSLIC™ Step-Down Power Modules

This video provides an introduction to Maxim’s 300mA Himalaya uSLIC step-down power modules.

Introduction to the MAX31341B Low-Current, Real-Time Clock with I2C Interface and Power Management

This video provides an introduction to Maxim’s Low-Current, Real-Time Clock with I2C Interface and Power Management – the MAX31341B.

Introduction to the MAX17302 MAX17312 1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

This video provides an introduction to the MAX17302/MAX17312, a 24μA IQ stand-alone pack-side fuel gauge IC with protector and SHA-256 authentication for 1-cell lithium-ion/polymer batteries.

High-Efficiency Buck-Boost Regulator with 5A Switches

MAX77816

98% efficiency with I2C interface for single-cell Li-ion battery-powered applications.

20A User-Configurable Quad-Phase Buck Converter

MAX77812

91% efficiency with 3.4MHz high-speed I2C and 30MHz SPI interface, optimized for single-cell battery-powered applications.

[Sales Rep] Technical Training Basic 2019 Power Protection

"Technical Basic Training course presenting the basic of what system protection is, why it is needed, and the current challenges for system engineer trying to implement full system protection. This is a newer version of a previous one"

[Sales Rep] Technical Training Basic 2019 - Offset and Gain Error

Technical Basic Training course presenting the causes of Offset and Gain Errors in operational amplifiers and other devices in a typical signal chain and how to mitigate these errors through calibration.

[Sales Rep] Technical Training Basic 2019 ESD Tutorial

Technical Basic Training course presenting an overview of Electrostatic Discharge and how to protect the integrated circuits from that phenomenon.

[Sales Rep] Technical Training Basic 2019 - Frequency Synthesizer

Training course presenting an overview of Frequency Synthesizer using Phase Locked Loop method.

[Sales Rep] Technical Training Basic 2019 Understanding DAC Specifications

Technical Basic Training course explaining the key specifications of Digital to Analog converters.

Introduction to the MAX20039-40 2V to 36V, 2.1MHz, 0.6A/1.2A Automotive Buck Boost Converters

This video provides an introduction to Maxim's 2V to 36V, 2.1MHz, 0.6A/1.2A Automotive Buck Boost Converters - the MAX20039-40.

[Sales Rep] Technical Training - Basic Curriculum 2019

This curriculum contains six courses: DAC Specifications, Frequency Synthesizers, ESD, Power Protection, NFC/RFID, Signal Chain Offset and Gain Errors

Introduction to the MAX20026 MAX20026S Automotive Quad, Low-Voltage Step-Down DC-DC converters with Low-Noise LDO

This video provides an introduction to Maxim's Automotive Quad, Low-Voltage Step-Down DC-DC converters with Low-Noise LDO - the MAX20026 and MAX20026S.

MAX22500E eye diagram

MAX22500E is the industry’s fastest RS-485 transceiver with pre-emphasis for robust communications over longer cables.

MAX22500E

The MAX22500E RS-485 transceiver IC supports a data rate of 100Mbps over 10m of Cat5e cable.

Industrial Control System

RS-485 is an ideal communications standard for noisy industrial environments.

Introduction to the MAXM86161 Single-Supply Integrated Optical Module for HR and SpO2 Measurement

This video provides an introduction to Maxim’s Single-Supply Integrated Optical Module for heart rate and SpO2 Measurement – the MAXM86161.

Introduction to the MAX38904A/B/C/D 2A Low Noise LDO Linear Regulator in TDFN

This video provides an introduction to Maxim's Low Noise LDO Linear Regulator in TDFN - the MAX38904A MAX38904B MAX38904C MAX38904D.

Introduction to the MAX30208 Low-Power, High-Accuracy Digital Temp Sensor

This video provides an introduction to Maxim’s low-power, high-accuracy digital temp sensor – the MAX30208.

Introduction to the MAX25600 Synchronous High Voltage 4 Switch Buck Boost LED Controller

This video provides an introduction to the MAX25600, a synchronous 4-switch buck-boost LED driver controller.

Enabling a Healthier World with the MAX30101 Biosensor Solution and Raku-Raku Smartphone

Fujitsu Connected Technologies Limited has added a healthcare functionality to its Raku-Raku Smartphone, which is ideal for first-time smartphone users. The company expects smartphones to make seniors more aware of their heath and to provide clues to improve their living habits. With analysis of pulse wave data, which can be obtained from the MAX30101 pulse-oximeter and heart-rate sensor, the company created a feature to diagnose the age of blood vessels and to assess stress levels.

Learn More: MAX30101 ›

ProtoCentral MAX86150 breakout board

Quickly prototype mobile health applications with breakout boards like ProtoCentral’s MAX86150 board.

ProtoCentral MAX30003 breakout board

Breakout boards like ProtoCentral’s MAX30003 product help you quickly evaluate and test-drive the MAX30003 biopotential AFE.

Introduction to the MAX17303 MAX17313 1-Cell ModelGauge m5 EZ Fuel Gauge with Protector

This video provides an introduction to Maxim's 1-Cell ModelGauge m5 EZ Fuel Gauge with Protector - the MAX17303 and MAX17313.

Introduction to the MAX20029 MAX20029B MAX20029C Automotive Quad/Triple Low Voltage Step-Down DC-DC converters

This video provides an introduction to the MAX20029/MAX20029B/MAX20029C power-management ICs (PMICs) which integrate four low-voltage, high-efficiency, step-down DC-DC converters.

MAX17263

How to Select and Configure a Battery Fuel Gauge for Your Portable System

Travis explains how to choose a battery fuel gauge and battery characterization model. He demonstrates the ModelGauge m5’s EZ Configuration GUI which does not require characterization for most battery chemistries, using the MAX17263GEVKIT.

Learn More › MAX17263

Suhel Dhanani, business development director, Industrial & Healthcare Business Unit, at Maxim

Small, efficient ICs help drive the industrial IoT.

Industrial IoT application

Small, efficient, and rugged ICs are critical components in an IIoT application.

Simon Wu

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Naina Murthy

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Kelly Fan

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Aaron Wilhelm

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Tim Jeong

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Tawni Henderson

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Mar’Shun Oliver

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

Maxim Summer Interns Showcase Their Technical Talents

Maxim’s summer 2019 interns showcase their talents in areas including electrical engineering, finance, marketing, and legal.

How to Use the MAX31342SHLD Evaluation Kit

Tawni sets up the MAX31342SHLD, which evaluates the MAX31342 low-current real-time clock (RTC). She walks through the GUI and shows some of the MAX31342SHLD’s features, including real-time monitoring and low timekeeping current.

Learn more: MAX31342SHLD ›

How to Update the Firmware on the MAXREFDES101 Health Sensor Platform 2.0

Sankalp explains how to easily update the firmware on the MAXREFDES101 Health Sensor Platform 2.0 to quickly start programming the onboard electrocardiogram (ECG), photoplethysmography (PPG), and human body temperature sensors.

Learn more: MAXREFDES101 ›

How to Use a Flyback Converter to Achieve Isolated Voltage Level Shifting

Teja explains how to translate a single-ended voltage at the input to a bipolar voltage at the output using an isolated flyback converter. He goes over the importance of isolation in a circuit and the circuit elements that can be used for isolation. He finishes with a demonstration of how to use the MAXREFDES1141 and the MAXREFDES1132 to achieve isolated voltage-level shifting.

Learn more: MAXREFDES1141 ›
Learn more: MAXREFDES1132 ›

Laptop clock

An accurate, low-power RTC keeps clocking applications running reliably.

Optimized Pulse-Oximeter and Heart-Rate AFE

MAX30112

Includes 2 LED drivers and 1 photo diode input to enable heart-rate (HR) measurement for wearables.

Learn more ›

Introduction to the MAX31342 Low Current Real Time Clock with I2C Interface

This video provides an introduction to the MAX31342 low-current, real-time clock (RTC) is a time-keeping device that provides an extremely low timekeeping current, permitting longer life from a power supply.

±0.1°C Accurate, I2C Digital Temperature Sensor

MAX30208

Repeatability of 0.008°C RMS using a 16-bit sample rate enables clinical-grade accuracy for next-generation wearables.

Learn more ›

How Secure Authenticators Prevent Counterfeiting of Medical Disposables

Medical disposables such as pulse oximeters can be easily protected with secure authenticators.

MAX20743EVKIT Board Photo

Evaluation Kit for the MAX20743 (Integrated, Step-Down Switching Regulator with PMBus)

Clock

In addition to clocking functionality, RTCs can help save power and reduce size for compact designs.

Low-Current, Real-Time Clock with I2C Interface and Power Management

MAX31341B

Operates at < 180nA to extend battery life in wearables, point-of-sale, and portable systems.

Learn more ›

Ultra-Low-Power Biopotential/BioZ AFE for ECG and Pace Detection

MAX30001

Ultra-low 1.71µVP-P noise floor optimizes sensitive health patch measurements.

Learn more ›

Best-in-Class Optical Pulse Ox and Heart-Rate Sensor

MAX86141

Leading-edge HIR/HRV and activity classification algorithms for high-intensity outdoor environments.

Learn more ›

Introduction to the MAX32665 MAX32666 MAX32667 and MAX32668 Low Power ARM Cortex-M4 with FPU-Based Microcontroller w/ Bluetooth 5 for Wearables

This video provides an introduction to the MAX32665-MAX32668 UB class microcontroller, which is an advanced system-on-chip featuring an Arm® Cortex®-M4 with FPU CPU for efficient computation of complex functions & algorithms.

Smartwatch for healthcare

Smartwatches and other wearables can help reduce healthcare costs.

Andrew Baker of Maxim

Maxim’s Andrew Baker explains how wearables can help lower healthcare costs.

How to Set Up the MAXREFDES117 Heart-Rate and Pulse-Oximetry Monitor with an Arduino Board

Ben demonstrates how to use the MAXREFDES117 heart-rate and pulse-oximetry reference design with an Arduino® microcontroller to read heart-rate signals and monitor SpO2 levels. He also demonstrates some common issues and how to resolve them.

Lean More: MAXREFDES117 ›

Synchronous Buck and Buck-Boost LED Drivers/DC-DC Converters

MAX25610A/MAX25610B

Automotive-grade LED drivers with integrated MOSFETs and internal current sense drive up to 3A LED.

Learn more ›

How Dynamic Voltage Scaling Saves Power in Wearables

Wearables that provide continuous, real-time monitoring of vitals such as heart rate are designed to operate reliably under varying conditions and use cases. Dynamic voltage scaling can complement other techniques to minimize power and extend battery life.

Synchronous 5V to 60V, 4-Switch Buck-Boost LED Driver Controller

MAX25600

Provides seamless transition between buck, buck-boost, and boost modes to drive wide range of LEDs with up to 95% efficiency.

Learn more ›

Automotive High-Voltage, HB LED Controllers

MAX25611A/B/C/D

5V to 36V VIN, up to+65V boost output, support multiple configurations for front-end lighting and other LED applications.

Learn more ›

How to Get Started Logging Temperature with DS1925 iButton Temperature Data Logger

Venkatesh explains how to use the DS1925 iButton® Thermocron® data logger with Maxim’s OneWireViewer software to quickly and easily log temperature data. He also explains how the DS1925 differs from Maxim’s other temperature logger, the DS1922.

Learn More: DS1925 ›

How to Get Started Using the EE-SIM OASIS Simulation Tool to Accurately Simulate Your Circuit Designs

Learn how to simulate a switching power circuit using the EE-Sim® OASIS Tool. Built on the SIMPLIS® simulation engine, the OASIS simulator for switched-mode power ICs provides over 150 power reference designs, which are ready to copy, modify, and simulate.

Learn More: EE-SIM OASIS ›

Fig02

Opening/closing a smart lock using the DS28C36

Untitled-1

Remotely opening a smart lock.

Smart Lock

Embedded electronic authentication can help ensure that smart locks do their job.

[Sales Rep] FAE Technology Workshop: IO-Link Smart Sensors (PRE-WORK)_

This session was developed as pre-work for the 2016 Tech Workshop and is a simple introduction to IO-Link. Discussed are: what is IO-Link and why it is used.

[Sales Rep] IP3 Demystified

This session discusses the IP3, a common specification in RF circuitry and components. The term is defined, locations within an RF circuit where it is significant are identified, then IP3 is described in terms of transfer functions. Note – the audio has dropped out of several of the last slides.

[Sales Rep] Technical Training, Basic 2018: Pulse Oximetry_

Technical training course presenting an overview of Pulse Oximetry, PPG and their applications.

[Sales Rep] Technical Training, Basic 2019: NFC and RFID

"Technical Basic Training course presenting an overview of Near Field Communication and RFID and their applications. "

[Sales Rep] FAE Technology Workshop: hSensor Platform, Industrial & Healthcare BU

"Originally designed for Field Applications Engineers courses in this series are generally suitable for participants with a minimum level of technical knowledge, although some may require a more advanced technical background. Generally, as a result of completing this training an individual will gain a deeper and more technical understanding of the Maxim product and technology covered, enabling more effective customer interactions and engagements. This is a recorded workshop from the “FAE Technology Workshop” held on March 7-10, 2016, at the Maxim SJHQ location. Here’s the trainer’s description: Hand's on session to evaluate the hSensor platform. The issuing BU is: Industrial & Healthcare. For content related questions, contact the trainer: John DiCristina. NOTE: If you attend the FAE Technology workshop in EMEA or APAC, this topic may be covered during the live training."

[Sales Rep] Technical Training - Basic Curriculum 2019 (Part 2)

This curriculum contains six courses: DAC Specifications, Frequency Synthesizers, ESD, Power Protection, NFC/RFID, Signal Chain Offset and Gain Errors

[Sales Rep] FAE Technology Workshop: Medical Terminology, Regulatory and Standards, Industrial & Healthcare BU

"Originally designed for Field Applications Engineers courses in this series are generally suitable for participants with a minimum level of technical knowledge, although some may require a more advanced technical background. Generally, as a result of completing this training an individual will gain a deeper and more technical understanding of the Maxim product and technology covered, enabling more effective customer interactions and engagements. This is a recorded workshop from the “FAE Technology Workshop” held on March 7-10, 2016, at the Maxim SJHQ location. Here’s the trainer’s description: Understand the commonly used medical terminology and regulations guiding our customer design cycles. The issuing BU is: Industrial & Healthcare. For content related questions, contact the trainer: Larry Skrenes. NOTE: If you attend the FAE Technology workshop in EMEA or APAC, this topic may be covered during the live training."

[Sales Rep] Analog Output Branch Training

This presentation is focused on industrial analog output devices and intended for distributors. Covered are: Where analog outputs are used and their applications, design approaches, solutions from competitors and reference designs/tools available.

[Sales Rep] Maxim Experts Program, Advanced Course: Secure Authentication (2)

Maxim Experts Program course presenting an overview of security authentication based on SHA-256 as well as ECDSA and their applications.

[Sales Rep] FAE Technology Workshop: Temperature Measurement (PRE-WORK)

Please pre-load this software before taking the FAE Technology Workshop: Temperature Measurement course.

[Sales Rep] 4-Channel Analog Output Campaign Training

Overview of the devices and support tools available in support of the 4-Channel Analog Output Campaign

[Sales Rep] 4-Channel Analog Output - Design Accelerator Kit (Mandarin)

This presentation focuses on the Analog Output Design Accelerator kit. Explains what an analog output is, where it is used and options available for designing an analog output module. Finally, it is shown how Maxim’s Design Accelerator kit makes it easy to demonstrate and evaluate Maxim’s solution.

[Sales Rep] Maxim Masters, Tokyo 2017: Presentations for courses S - Z.

This material contains PDF versions of the presentations from Maxim Masters, Tokyo 2017. Presentations for courses from S-Z. It also contains any installation files needed for each course. Ensure pop-up blockers are off to allow zip file to download.

[Sales Rep] RF Solutions Update - Sept 23 2016

Product update from the RF Solutions BU. Review of the business organization and broad product categories. The focus of this update is (1) Linearizers, (2) Macro Cell, (3) Multi-Market RF (MMRF) and (4) RF Amplifiers. Key markets for each of these product types are described. Products covered include: LNA, Power Detector, PLL/VCO, Synthesizer, PLL, Gain Block, VGA, Mixers, RF Linearizer, GNSS and Tuner.

[Sales Rep] LED Drivers Update

Product update on LED driver devices. Includes an explanation of LED driver functionality and operation, and target markets. Emphasis is on MR16 and PoE lighting applications..

[Sales Rep] FAE Technology Workshop: 4-Pair Power Over Ethernet, Cloud & Data BU

"Originally designed for Field Applications Engineers courses in this series are generally suitable for participants with a minimum level of technical knowledge, although some may require a more advanced technical background. Generally, as a result of completing this training an individual will gain a deeper and more technical understanding of the Maxim product and technology covered, enabling more effective customer interactions and engagements. This is a recorded workshop from the “FAE Technology Workshop” held on March 7-10, 2016, at the Maxim SJHQ location. Here’s the trainer’s description: An advanced look into the 4PPoE technologies to serve the emerging market for higher power via POE. The issuing BU is: Communication. For content related questions, contact the trainer: Gaoling Zou. NOTE: If you attend the FAE Technology workshop in EMEA or APAC, this topic may be covered during the live training."

[Sales Rep] Technical Training – Basic Curriculum 2018 (Part 1)

This curriculum contains four courses: Pulse Oximetry, RF Linearizers, NanoPower, Low Power Microcontrollers.

[Sales Rep] Technical Training, Basic 2018 Low Power Microcontrollers_

Technical training course discussing the basics of Low Power MicroControllers, development tools and MAX32660.

[Sales Rep] LED Driver Customer Presentation (Mandarin)

Overview of Maxim LED driver products. Focus is on devices for MR16 and AR111, POE lighting and DC Lighting. Discusses design challenges, competition, measuring efficiency and Maxim solution.

Basic introduction to multiplexers which discusses the operation, uses and configurations of multiplexers.

[Sales Rep] SC2200 RF Linearizer FAE Training

Detailed introduction to the SC2200 RF Linearizer. Covers the theory of operation, differences between the SC2200 and its predecessor, performance results, applications and support tools available.

[Sales Rep] IC Device Packages

This course presents a thorough explanation of IC packaging. Topics covered include IC and packaging basics, interrelation between the device and the package, terminology and nomenclature, discussion of various package types and how to locate information on packages.

[Sales Rep] Maxim Star Products

Discussion of the Star Products and associated “One More Socket” campaign. Star products from each category listed and details are provided on one or more products from each. Sales tools are also highlighted.