Low power integrated sensor module

Jon Lawson

For wearable pulse oximeter and heart rate designs. Nick Flaherty reports

System designers can speed time to market for wearable and healthcare products with a new pulse oximeter and heart rate integrated sensor module from Maxim Integrated Products.

The MAX30102 integrated pulse oximetry and heart rate monitor module is an ultra-low power solution providing a complete system to save space and ease the design-in process for mobile and wearable devices.

Wearable equipment for vital-sign monitoring is rapidly evolving, and analogue integration is at the heart of this. System-on-chip (SoC) and integrated module solutions are rapidly replacing discrete, multicomponent designs, and the MAX30102 integrates red and IR LEDs to modulate LED pulses for oxygen saturation (SpO2) and heart rate measurements.

The ultra-low power extends battery life and allows the sensor to operate from a single 1.8V power supply and a separate 5V power supply for the internal LEDs. The integrated 14pin optical module maintains a very small size of 5.6mm x 3.3mm x 1.55mm without sacrificing optical or electrical performance; Integrates internal LEDs, photodetectors, optical elements, and low-noise electronics with ambient light rejection

An evaluation platform with the integrated module and an accelerometer provides a solution for customers to quickly evaluate the module

"Maxim is committed to providing innovative wearable solutions for customers," said Andrew Baker, Executive Director for Industrial and Healthcare Products at Maxim Integrated. "Our IP and knowledge for these applications allows us to integrate multiple technologies in a tiny, low power package."

The MAX30102 is specified over the -40˚C to +85˚C temperature range.