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MAXREFDES103#: Wrist-Based SpO2, HR, and HRV Health Sensor Platform

MAXREFDES103

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Description

The MAXREFDES103# is a wrist-worn wearable form factor that demonstrates the high sensitivity and algorithm processing functions for health-sensing applications. This health sensor band platform includes an enclosure and a biometric sensor hub with an embedded algorithm for heart rate and SpO2 (MAX32664C) which processes PPG signals from the analog-front-end (AFE) sensor (MAX86141). Algorithm output and raw data can be streamed through Bluetooth® to an Android® app or PC GUI for demonstration, evaluation, and customized development.

Design files, firmware, and software can be found on the Design Resources tab. The board is also available for purchase.

Features

  • Photoplethysmography (PPG)
  • Wrist-based embedded heart rate, blood oxygen saturation (SpO2) algorithm
  • Heart rate variability (HRV), respiration rate, sleep quality library algorithm
  • Wearable health band form factor
  • MAX32664 sensor hub
  • MAX86141 PPG analog front-end
  • 3-axis accelerometer
  • Windows® and Android GUIs

  • MAXREFDES103#

    MAXREFDES103#

  • MAXREFDES103# Diagram

    MAXREFDES103# Diagram

  • maxrefdes103

    maxrefdes103

  • MAXREFDES103#

    The MAXREFDES103# is a full wrist-worn wearable reference design for heart-rate, heart-rate variability, and SpO<sub>2</sub> measurements. MAXREFDES103#

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Designed, Built, Tested

Board pictured here has been fully assembled and tested.

 

All Design Files

Hardware File

pcb-layout

Each file includes schematic, BOM, PCB layout, fab package, and PCB CAD

Details Section

Details Section

Introduction

The MAXREFDES103# contains enables quick evaluation of our hardware and embedded firmware for heart-rate and SpO2 monitoring on a wrist-based platform to significantly shorten development time for custom fitness, health, and clinical applications.

The MAXREFDES103# platform includes the following key components

  • Micro board, which includes the MAX32630 microcontroller, MAX20303 power-management IC (PMIC), dual-mode Bluetooth, and 6-axis accelerometer and gyroscope
  • Sensor board, which includes the MAX86141 AFE, optical heart-rate sensor with one green LED, one red LED, one IR LED, two photodiodes, and MAX32664C biometric sensor hub with an embedded algorithm for heart rate and SpO2 monitoring
  • MAXDAP Pico Adapter board for use during a firmware upgrade for the micro board
  • Health sensor band enclosure and straps
  • Hardware design files, firmware, and software

System Diagram

Figure 1. MAXREFDES103# system diagram.

User Guide

Required equipment

  • PC or Android device (e.g., tablet) with Bluetooth connection for data logging

Android is a registered trademark of Google Inc.
Arm and Cortex are registered trademarks of Arm Limited.
Maxim is a registered trademark of Maxim Integrated Products, Inc.
The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
Windows is a registered trademark of Microsoft Corporation.

Maxim Devices (6)

Part Number Name Product Family Order Design kits and evaluation modules
MAX86141 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health Sensor Interface Buy Now Design Kits
MAX20303 PMIC with Ultra Low IQ Voltage Regulators, Battery Charger and Fuel Gauge for Small Lithium Ion Systems Battery Management Buy Now Design Kits
MAX32630 Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 2MB Flash and 512KB SRAM MCU - Microcontroller Buy Now Design Kits
MAX32664 Ultra-Low Power Biometric Sensor Hub Sensor Interface Buy Now Not Available
MAX86141 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health Sensor Interface Buy Now Design Kits
MAX4740 Quad SPDT Audio Switches Switches and Multiplexers Buy Now Not Available

Maxim Devices (6)

Part Number Product Family
Sensor Interface
Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health
Battery Management
PMIC with Ultra Low IQ Voltage Regulators, Battery Charger and Fuel Gauge for Small Lithium Ion Systems
MCU - Microcontroller
Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 2MB Flash and 512KB SRAM
Sensor Interface
Ultra-Low Power Biometric Sensor Hub
Not Available
Sensor Interface
Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health
Switches and Multiplexers
Quad SPDT Audio Switches
Not Available

Technical Documentation

Title Document Type Date
MAX32664 User Guide Application Notes 2019-02-01

Technical Documentation

Date Document Type
2019-02-01 Application Notes

Design Files (4)

Title Type Size Date
maxrefdes103 ZIP 81MB 2019-12-24
maxrefdes103-sensor-board ZIP 20MB 2020-06-04
maxrefdes103-max32630-micro-board ZIP 18MB 2019-12-24
mechanical-design ZIP 39MB 2019-12-24
Date Type
2019-12-24

maxrefdes103

(ZIP, 81MB)

2020-06-04

maxrefdes103-sensor-board

(ZIP, 20MB)

2019-12-24

maxrefdes103-max32630-micro-board

(ZIP, 18MB)

2019-12-24

mechanical-design

(ZIP, 39MB)

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