Analog Devices / Maxim Integrated MAX86171 Optical Pulse Oximeter Heart-Rate Sensors

Analog Devices MAX86171 Optical Pulse Oximeter Heart-Rate Sensors are a complete dual-channel optical data acquisition system. The Analog Devices MAX86171 features ultra-low-power operation for wearable devices with a low-power operation, and an optical readout channel of < 11μa at 25fps. The exposure integration period ranges from 14.6μs to 117.1μs with a low shutdown current of < 1μa.


  • Complete dual-channel optical data acquisition system
  • Ultra-low-power operation for wearable devices
  • Low-power operation, optical readout channel < 11μA at 25fps
  • Exposure integration period ranging from 14.6μs to 117.1μs
  • Low shutdown current < 1μA
  • Excellent top-end dynamic range > 91dB in white card loop-back test (Nyquist sample-to-sample variance)
  • Extended dynamic range up to 110dB (averaging and off-chip filtering)
  • Supports frame rates from 1fps to 2.9kfps
  • High-resolution 19.5-Bit charge integrating ADCs
  • Supports four PD inputs for multi-parameter measurements
  • Supports nine LED driver output pins generated from three 8-Bit LED current drivers
  • Low dark current noise of < 50pA RMS (sample-to-sample variance in 117.1μs integration time)
  • Excellent ambient range and rejection capability> 100μA ambient photodetector current
  • > 70dB ambient rejection at 120Hz (average mode > 2)
  • Miniature 2.78mm x 1.71mm, 7 x 4 0.35mm ball pitch WLP package
  • -40°C to +85°C operating temperature range


  • Wearable Devices for Fitness, Wellness, and Medical Applications
  • Clinical Accuracy
  • Suitable for Wrist, Finger, Ear, and Other Locations
  • Optimized Performance to Detect:
  • Optical Heart Rate
  • Heart Rate Variability
  • Oxygen Saturation (SpO2)
  • Body Hydration
  • Muscle and Tissue Oxygen Saturation (SmO2 and StO2)
  • Maximum Oxygen Consumption (VO2 max)
Published: 2021-10-08 | Updated: 2023-04-17