Ultra-Low Power Consumption

• Average current consumption in heart rate detection mode: 59 µA

• Average current consumption in SpO2 detection mode: 230 µA

Ultra-high Performance

• 24-bit highly accurate ADC

• PPG dynamic range: up to 110 dB

• Up to 256 µA configurable Background Light Cancellation (BGC)

• Up to 256 µA configurable DC offset cancellation

• AC Background Light Rejection (BGR) (50 Hz): 60 dB

• DC Background Light Rejection (BGR): 80 dB

• ECG Common-Mode Rejection Ratio (CMRR): 100 dB

• ECG input impedance > 2 GΩ,support dry electrode

• Input noise meet YY-0885/IEC60601-2-4

Temperature Sensing Module

• 2 NTC temperature sampling channels and 1 ref resistance sampling channel

• Temperature sensing range and deviation: 25 °C ≤ Temp. < 45 °C: ±0.1 °C

Light Transmitter Block

• Two built-in LED drivers: each supports 4 LEDs, total 8 LEDs

• Each LED driver with 8-bit resolution and a maximum drive current of 200 mA

• Supports 8 LEDs concurrently for SpO2 or multi-wavelength and multi-position heart rate detection

Light Receiver Block

• Four AFEs that support synchronous sampling (when the temperature sensing channels are not in use)

• Up to 8 programmable sample time-slots; up to 32 effective channels for data acquisition

• 2 PDs in differential connection or 4 PDs in single-ended connection

Build-in Functions

• Automatic dimming

• Automatic wrist (wearing) detection

• Right leg drive (RLD) single-lead ECG sensing circuit

Internal FIFO

• 800 * 4 bytes, caching 800 samples

Communication Interface

• SPI: up to 12 MHz

• IIC: up to 1 MHz

Critical Electrical Characteristics

• AVDD: 2.0 V – 3.6 V

• VDDIO: 1.62 V – 3.6 V

• Operating temperature: -30 °C – 85 °C

Package

• WLCSP Package

• Size: 2.605 mm * 2.905 mm * 0.468 mm, 0.4 mm pitch, 42 balls

Typical Applications Supported

• Heart Rate

• SpO2

• ECG

• PWTT

• HRV

• Wearing detection

• Temperature measurement