Features
MAX30101 Heart Rate Monitor and Pulse Oximeter
o
Tiny 5.6mm × 3.3mm × 1.55mm 14-Pin Optical Module
o
Integrated Cover Glass for Optimal, Robust Performance
o
Ultra-Low Power Operation for Mobile Devices (< 1mW)
o
Programmable Sample Rate and LED Current for Power Savings
o
High SNR (Signal-to-Noise) ratio, typically greater than 80dB
MAX32664 Sensor Hub
o
Maxim-licensed firmware provides complete algorithmic support for finger heart
rate and blood oxygen saturation calculations
o
Communicates with host controller over industry standard I
2
C interface.
o
Secure firmware updates authenticated by dedicated bootloader.
3-Axis Accelerometer Provides Greater Accuracy
o
Compensates for motion artifacts.
Applications/Uses
Portable Medical Devices
Telemedicine
Sensor Hubs
Android or IOS devic
Introduction
The MAXREFDES220# provides detailed design information to use Maxim Integrated
devices to quickly implement end-to-end measurement of heart rate and SpO2 using
reflective photo plethysmography (PPG).
The MAX30101 operates from a 1.8V power supply and a separate 5.0V power supply
for the internal LED. Many device parameters are configurable by the MAX32644. The
module can be shut down through software with zero standby current, allowing the
power rails to remain powered at all times.
The MAX32664 is a small, low cost, power-optimized sensor hub for finger-based pulse
applications using the MAX30101. The hub collects and processes the output of the
PPG and accelerometer transparently through a dedicated I
2
C interface. A
second,standard-mode I
2
C interface connects to the host through a dedicated command
set.
A Windows
®
-based GUI configures the sensors and graphically displays raw and
processed heart rate and SpO2 data. It also provides the ability to collect and log
sensor output for off-line evaluation.
The provided MAX32630FTHR board emulates a host system for easy development.
Source code for the MAX32630FTHR firmware is freely available on the mbed site to
allow customers to implement their own custom host on any platform.
