Manufacturer: Pixart

Datasheet: PAH8133HU-IN

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Product Detail

The PAH8133HU-IN is a health management sensor created by Pixart, designed for wearables. It supports the acquisition of PPG signals from red-light and IR-light. The sensor offers two output modes: Hardwired Heart Rate DSP Engine Mode and Raw Data Mode. It has low current consumption, using only 160µA during heart rate detection. Suitable for hearable applications, it can detect heart rate and SpO2 from TWS earbuds and BLE earmuffs. The package size is 3.3 x 3.3 x 0.68 mm, and it supports green, red, and IR wavelengths. The sensor includes an IR touch sensing function and is available for mass production.

Health sensor PAH8133HU-IN by Pixart for wearables. Supports PPG signals, heart rate, and SpO2 detection. Low power consumption, compact size, and IR touch sensing. Ideal for TWS earbuds.

Features & Benefits

  • Support the acquisition PPG signals from red-light and IR-light
  • Provides the option to output in either Hardwired Heart Rate DSP Engine Mode or Raw Data Mode
  • Ultimately low current consumption that consumes only 160µA of typical current during heart rate detection (incl. sensor, LED, and the Hardwired Heart Rate DSP Engine)
  • Suitable for hearable applications, including the detection of heart rate and SpO2 from TWS earbuds and BLE earmuffs

Technical Specifications

Package Size (mm)3.3 x 3.3 x 0.68
Typical CurrentPPG Mode (20Hz): 85µA
No. of LED Drivers4
PPG Wavelength SupportedGreen, Red, IR
Built-in LED for PPGNo
IR Touch Sensing FunctionYes, by IR light
AvailabilityMass Production



PixArt Imaging Inc. is a CMOS imaging sensing and navigation company offering a broad selection of sensors and technologies to support today’s complex human-machine interface designs. PixArt specializes in CMOS image sensors (CIS), capacitive touch controllers and related imaging application development.

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