Wearable Health

Nearly all of the human-body signals traditionally monitored in a clinical environment can now be collected by a wearable product, very often with close to the same level of precision. These traditional signals include:

  • Pulse/Heart Rate
  • Blood Oxygen
  • Stress
  • Electrocardiogram (EKG/ECG)
  • Body Temperature
  • UV Light (Skin Exposure)


Power and Battery Management

In a wearable product the power system must be able to regulate voltage from a battery—a voltage source with a declining voltage output. The regulators must be efficient enough to maximize charge usage, and must also supply all of the power rails required by the design. The usable voltage range of a rechargeable Li+ battery ranges from 4.2V to approximately 3.2V. Most wearable products use main power rails that are below the minimum charge of a single-cell Li+ battery, so the main rails are typically sourced by a step-down regulator. Some functions within a wearable product may require a higher voltage level than that provided by a single-cell battery. Thus, the power management function must contain at least one step-up regulator. The number of rails required depends on the device, but for optimum efficiency it is best to minimize the total number of rails.

Power Management ICs for Wearables 


Power usage and processing capabilities are important selection criteria for micro-processing applications. A system partitioning strategy must be used to decide which system functions are best integrated into the microcontroller and which can be handled externally. Since wearable health devices read human body signals, the capabilities of any on-chip analog circuitry must also be taken into account to ensure they can accurately process low-level signals.

Microcontrollers for Wearable Applications 

Sensors and Sensor Interface

Human body sensors output very low magnitude signals, in the millivolt and microvolt range. Our integrated devices for wearable health applications combine sensors with amplification and conversion circuits within a single die or package. These small, high-accuracy solutions provide higher magnitude analog outputs or serialized digital outputs.

Sensors for Wearable Applications 

Featured Products

Wearable Charge-Management Solution


Extends Battery Life of Wearable Electronics

Arm Cortex-M4F Development Platform for Battery-Powered Devices


Mbed™-enabled evaluation system for the MAX32625 ultra-low-power microcontroller. Arduino connectors and ample prototyping space enable rapid development.

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


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.

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


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.

Wellness Measurement Microcontroller


This complete functional system includes a MAX32600 wellness measurement microcontroller, selectable power sources, headers for access to I/O port pins and the AFE, 8-digit LCD display, USB, UART, low-power Bluetooth® transceiver, and general-purpose IO.

Ultra-Low-Power Arm® Cortex®-M3 with Wellness Sensor Analog Front-End, Advanced Hardware Security, 256KB Flash and 32KB SRAM


Ultra-Low Power Arm® Cortex® M4 with FPU Microcontroller for Wearables and IoT, with 2MB Flash and 512KB SRAM, and Advanced Cryptographic Hardware Engines


The MAX32630/MAX32631 feature an Arm® Cortex®-M4 with FPU CPU that delivers ultra-low power, high-efficiency signal processing functionality with significantly reduced power consumption and ease of use.

Compact Development Board to Build Small, Power-Optimized IoT Applications


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

High-Performance, Ultra-Low Power ARM Cortex-M4F with FPU-Based Microcontroller for Rechargeable Devices


Ultra-Low Power Cortex-M4F for Wearable Medical and Fitness Applications

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


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

Wearable Power Management Solution for Primary Cells


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

Analog-Rich Arm Cortex-M3 Development Platform


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


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

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High-Sensitivity Pulse Oximeter and Heart-Rate Sensor


Pulse Oximeter and Heart-Rate Biosensor for Wearable Health

Wearable Charge Management Solution


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.


Our wearable healthcare solutions provide additional information on designing wearable health products, including examples and block diagrams of typical wearable designs.

Wearable Healthcare Solutions


Type ID Title

Body Temperature Measurement: Send and Receive With Wearable NFC
2:00 min
November 2014

Pulse Oximetry Measurement: Wearable Oxygen Monitor for Active Lifestyles
2:06 min
November 2014

Wellness Watch: A Wearable Wellness Platform Example
2:25 min
November 2014

Fit Two Shirt: A Wearable Wellness Platform Example
2:08 min
November 2014

Heart Rate Monitor Demo
25:30 min
August 2016

Embedded Security Solutions Using Secure Authenticators
45:08 min
June 2017

Make High-Accuracy Biopotential and BioZ Measurements with MAX30001
3:52 min
November 2017

Wristband Health Monitoring Demo with MAX86141
4:55 min
November 2017

[Distributor] Introduction to the MAX32650/51/52 Low Power ARM Cortex-M4 with FPU-Based Microcontroller for Battery Powered Applications
27:42 min
February 2018

[Distributor] Introduction to the MAX32660 Low Power ARM Cortex-M4 with FPU-Based SOC for Wearable Sensors
22:19 min
February 2018

[Internal/Distributor] FAE Technology Workshop: Power for Medical and Fitness, Industrial & Healthcare BU
0:50:00 min
March 2018

Introducing the MAX-ECG-MONITOR Wearable ECG and Heart Monitor
5:17 min
June 2018

[Distributor] Introduction to the MA17261 5.1µA Multi-Cell Fuel Gauge with ModelGauge m5 EZ
13:20 min
June 2018

Introducing the MAX-HEALTH-BAND Heart Rate and Activity Monitor
7:58 min
June 2018

[Distributor] Introduction to the MAX22444-45-46 Four-Channel, Fast, Low-Power, Reinforced Isolation 5kVRMS Digital Isolators
14:25 min
July 2018

[Distributor] Introduction to the MAX30002 Ultra-Low-Power Bioimpedance (BioZ) AFE
18:31 min
July 2018

[Distributor] Introduction to the MAX20307 High Frequency Optimized Configurable eGaN Driver
13:31 min
July 2018

[Distributor] Introduction to the MAX17263 Single/Multi-Cell Fuel Gauge with ModelGauge m5 EZ and Integrated LED Control
11:34 min
August 2018

[Distributor] Introduction to the MAX14745 and MAX20335 PMICs with Ultra Low IQ Voltage Regulators and Battery Charger for Small Lithium Ion Systems
16:28 min
August 2018

[Distributor] Introduction to the MAX20330 Programmable OVP Controller with VBUS Short Detection
15:18 min
July 2018

[Distributor] Introduction to the MAX17262 5µA 1-Cell Fuel Gauge with ModelGauge m5 EZ and Internal Current Sensing
10:55 min
August 2018

[Distributor] Introduction to the MAX20330A Precision HV Capable ID Detector
05:36 min
August 2018