DESCRIPTION

· The ADPD175GGI is a complete photometric system designed for optical signal measurement, featuring ambient light and synchronous reflected LED pulses detection.

· It integrates a highly efficient photometric front end, three LEDs, and a photodiode in a custom package that prevents direct light interference.

· The system includes a control block, a 14-bit ADC with a 20-bit burst accumulator, and three independently configurable LED drivers.

· It offers best-in-class rejection of ambient light interference, both dc and ac, through synchronous measurement.

FEATURES

· Compact 2.8 mm × 6.5 mm module with integrated optical components.

· Equipped with 2 green LEDs, 1 infrared LED, and 1 photodiode.

· Features a true 3-channel 370 mA LED driver with separate LED and AFE settings for each channel.

· Includes dual data registers for each LED return signal and a 14-bit ADC.

· On-board sample to sample accumulator enables up to 27 bits per data read.

· Custom optical package optimized for operation under a glass window and enhanced signal-to-noise ratio (SNR).

APPLICATIONS

· Optical heart rate monitoring (HRM).

· Reflective SpO2 measurement.