Ultra-Low Power Consumption

• PPG typical power consumption: 40 µA @ 2 ADCs * 2 Slots, 39 µs, 25 Hz, 1st-order Background Light Rejection (BGR)

• PPG typical power consumption: 110 µA @ 2 ADCs * 2 Slots, 39 µs, 100 Hz, 1st-order BGR

• Temp typical power consumption:19 µA @ 1 ADCs*1 Slot，39 µs，5 Hz

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

Temperature Sensing Module

• Single-channel sampling AFE supporting multiplexing

• 3 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 LED drivers embedded; each supports 4 LEDs

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

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

• Up to 8 programmable Lighting time-slots

• PSRR：95 dB

Light Receiver Block

• Two independent AFEs that support synchronous sampling

• Up to 8 programmable sample time-slots, up to 16 effective channels for data acquisition

• 8 built-in Decimation/Moving Average units

• 4 PD interfaces

• Maximum junction capacitance of PD: 400 pF

• Configurable TIA gain: 10 kΩ to 2 MΩ

Build-in Functions

• Automatic Dimming

• Automatic Wrist (Wearing) Detection

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, 0.4mm pitch, 42 balls

Typical Applications Supported

• Heart Rate

• SpO2

• HRV

• Wrist (Wearing) Detection

• Temperature measurement