New Product

Maxim Integrated Optical Bio-Sensor | New Product Brief

October 28, 2019 by Mouser Electronics

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

Maxim Integrated Optical Bio-Sensor 

Maxim Integrated’s MAXM86161 optical bio-sensor is a complete optical data-acquisition system in a single ultra-low-power module.

The module is optimized for heart rate monitoring and pulse oximetry and is targeted at in-ear medical and fitness applications such as earbuds. The transmitter consists of low-noise programmable current DACs driving green, red, and infrared LEDs, while the receiver includes a high-efficiency photodiode and a low-noise analog front-end.

The MAXM86161 has an industry-leading ambient light cancellation circuit and a built-in algorithm further enhancing the rejection of fast ambient transients. The sensor operates from a single 3 to 5.5 volt supply with low active and shutdown current draw to maximize runtime from small batteries.

The devices are housed in a compact 2.9 by 4.3 by 1.4 millimeter 14-pin OLGA package for in-ear devices and other mobile applications.

  • Optimized Architecture for Reflective Heart Rate and SpO2 Monitoring
  • Fully-integrated bio-sensor
    • Transmitter: Low-noise LED current DACs and Green/Red/IR LEDs
    • Receiver: high-efficiency PIN diode and low noise AFE
  • Excellent Ambient Range and Rejection Capability
    • >100μA Ambient Photodetector Current
    • >70dB Ambient Rejection at 120Hz
  • Supply voltage: 3.0V to 5.5V
    • Low-power operation: 10µA at 25sps
    • Low shutdown current: 1.6µA
  • Package: 2.9mm x 4.3mm x 1.4mm 14-pin OLGA

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