CN / EN
GH300
GH300 Block Diagram
Typical application for smart headphones

GH300 is a compact, ultra-low-power heart rate sensor that integrates two LEDs, a photodiode (PD), and an analog front-end. It works for devices with strict requirements on size and power consumption, such as smart earphones and smart rings.

Designed for smart earphone applications, GH300 is capable of in-ear detection (IED) and supports an external photodiode (PD) and LED module to achieve precise heart rate sensing.

GH300 Block Diagram
Typical application for smart headphones

Key Features

  • Ultra-Compact Size

    • LGA Package Size: 4.3 mm * 2.6 mm * 0.9 mm

    • Two LEDs, one PD and one AFE embedded

  • Ultra-Low Power Consumption

    • Average current consumption in heart rate detection mode: 40 µA

    • Average current consumption in in-ear detection mode: 10 µA

  • Excellent Performance

    • 24 Bits highly accurate ADC

    • Dynamic range: 96 dB

  • Light Transmitter Module

    • Two Internal LEDs and one External LED

    • Three independent LED drivers

    • 8-bit programmable current controller

    • Automatic dimming, self-adaptive to environment changes in optical path for optimal SNR output

  • Light Receiver Module

    • One Internal photodiode (PD) and one External photodiode (PD)

    • Two receiving channels

    • Up to 1 kHz heart rate sampling frequency for each channel

  • Operating Voltage: 2.1 V ~ 3.3 V

  • Communication Interface: IIC

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

  • Applications: smart headphones, smart rings, smart wristbands, etc.

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Product Details

Category

GH300

PPG TX

Internal LEDs

2

External LED interface

1

Max LED current

100 mA

PPG RX

AFE channel

1

 

Internal PDs

1

 

External PD input

1

 

Max SNR

96 dB

 

HR supply current(µA)

40

Interface

I2C / SPI

FIFO

256 samples

ADC

24 bit

Size(mm)

2.6 * 4.3 * 0.9

Package

LGA 16

Typical application

Smart headphones, Smart rings, Smart wristbands

Algorithm

HR, HRV, Wear Detect

Hardware

FPM02

Used for the module test and completed product test for all the health sensors

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GH30X-EVK+GH300 EVB

Used for the hardware verification and performance test for GH300

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Software & Tools

GH30x Android APP

This tool can be used for the optical path test of the whole machine and the data collection of health functions
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GH30x EVK PC Tool

This tool can be used to evaluate the performance of GH30x chip and generate the configuration of driver library
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GH30x Driver Library

The driver library integrates the driver code, library functions and algorithm library of GH30x to help customers develop drivers and algorithms quickly
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Documentation

Name Rights Description Version Date
GH300 Datasheet Secure File, Please Contact Sales V1.4 2022-07-16
Manufacturing Guide for GH300 Mass Production Test Jigs Rev.1.1.pptx Secure File, Please Contact Sales V1.1 2022-07-16
GH300_BOM Secure File, Please Contact Sales V1.2 2022-07-16
GH300_Schematic Secure File, Please Contact Sales V1.5 2022-07-16
GH300_GR_All Asm_V1.0 Secure File, Please Contact Sales V1.0 2022-07-16
GH300_GR_Stacking Asm_V1.0 Secure File, Please Contact Sales V1.0 2022-07-16
GH300_IR_All Asm_V1.0 Secure File, Please Contact Sales V1.0 2022-07-16
GH300_IR_Stacking Asm_V1.0 Secure File, Please Contact Sales V1.0 2022-07-16
GH300(4.3X2.6X0.9)_POD Secure File, Please Contact Sales V1.1 2022-07-16
Hardware Design Specification for Earphones Equipped with GH300 Heart Rate Sensor Secure File, Please Contact Sales V1.4 2022-07-16
GH300 Earphone Structure Fitting Test Specifications Secure File, Please Contact Sales V1.4 2022-07-16
GH300 Mechanical Design Specification For Heart Rate Detection at Antitragus Secure File, Please Contact Sales V1.3 2022-07-16
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