GH3220 Health Sensor

Ultra-Low Power Consumption

1. 100 µA @ 4 channels, 100 Hz, 1^st-order Background Light Rejection (BGR)

Ultra-High Performance

1. 24-bit highly accurate ADC
2. PPG dynamic range: up to 110 dB
3. Up to 256 µA Configurable Background Light Cancellation (BGC)
4. AC Background Light Rejection (BGR) (50 Hz): 60 dB
5. DC Background Light Rejection (BGR): 80 dB
6. ECG Common-Mode Rejection Ratio (CMRR): 100 dB
7. ECG Input Impedance > 2 GΩ, input noise 9 µVpp

Light Transmitter Block

1. 8 LED pins
2. Two 8-bit LED drivers: Each supports 4 LEDs
3. Each driver provides maximum drive current of 200 mA
4. Up to 8 programmable Lighting time-slots

Light Receiver Block

1. Four independent AFEs that support synchronous sampling
2. Up to 8 programmable sample time-slots, up to 32 effective channels for data acquisition
3. Maximum junction capacitance of PD: 400 pF

Built-In Functions

1. Automatic Dimming
2. Automatic Wrist Detection
3. Right Leg Drive (RLD) Single-Lead ECG Sensing Circuit

FIFO: 800 samples

Communication Interface

1. Up to 12 MHz SPI
2. Up to 1 MHz IIC

Package

1. WLCSP package
2. Size: 2.605 mm × 2.905 mm × 0.468 mm

Typical Applications

1. Heart Rate
2. ECG
3. PWTT
4. SpO2
5. HRV
6. Wrist Detection