Stock Code: 603160

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GH301 - Ultra-Low Power Heart Rater Sersor


GH301 is an ultra-thin and highly accurate heart rate sensor that integrates three LEDs, a photodiode (PD), and an analog front-end with ultra-low power consumption. It is can be adopted by smart devices such as smart wristbands and smart watches.


  • Ultra-Low Power consumption:

    1. Average current consumption in Heart Rate Detection mode (typical value): 25 µA @25 Hz Heart Rate Sampling Frequency (excluding LED)
    2. Average current consumption in Heart Rate Detection mode (typical value for East Asian users): 43 µA @25 Hz Heart Rate Sampling Frequency (including LED)
    3. Average current consumption in In-Ear Detection mode (typical value): 10 µA (including LED)
  • Excellent Performance:

    1. 24 Bits highly accurate ADC
    2. Dynamic range: 96 dB
  • Light Transmitter Module:

    1. Two green LEDs and one IR LED embedded
    2. Three independent LED drivers
    3. 8 Bits programmable current controller
    4. Automatic dimming, self-adaptive to environment changes in optical path for optimal SNR output
  • Light Receiver Module:

    1. Built-in Photodiode (PD)
    2. Two signal receiving channels
    3. Up to 1 kHz heart rate sampling frequency for each channel
  • Internal FIFO: 768 Bytes

  • Package:

    1. Size: 3 mm * 6 mm * 0.8 mm
    2. Three LEDs, one PD and one AFE embedded
  • Operating Voltage: 2.5V ~ 3.3V

  • Communication Interface: IIC or SPI

  • Functions: HR, HRV, In-Ear Detection (IED)

  • Application: Wearable devices such as wristbands, watches, fitness trackers and stick-on heart rate monitors.

System Block Diagram


  • GH301 Datasheet

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