ADPD144RI-ACEZ-RL

Overview

The ADPD144RI-ACEZ-RL is a photoplethysmography (PPG) optical sensor module from Analog Devices. It integrates red (660 nm) and infrared (880 nm) LEDs with a four-segment deep-junction photodiode and an analog front end (AFE). The device operates on a 1.8 V supply, drawing 9.3 mA peak current during four-channel operation. It features programmable LED drivers ranging from 8.5 mA to 370 mA and utilizes synchronous detection for ambient light rejection. Data acquisition employs a 14-bit ADC with burst accumulation up to 20 bits per sample period, extendable to 27 bits via sample-to-sample averaging. Communication occurs via a 1.8 V I²C interface.

Feature Summary

• Integrated dual-wavelength emitters optimized for blood oxygenation measurement
• Synchronous detection architecture for high ambient light interference rejection
• Configurable multi-channel analog front end with independent time slot settings

Applications

• Optical heart rate monitoring
• Reflective SpO2 measurement

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Ensure compatibility with the required I2C voltage levels and power supply constraints before integration into the final design.

Selection Notes

Select this component for applications requiring compact reflective PPG sensing. Evaluate the trade-off between sampling frequency and power consumption based on the configurable pulse counts and sleep times defined in the register map.

Part Context

This module belongs to the ADPD series of integrated optical sensors designed for wearable health monitoring. It combines discrete optical components with specialized ASIC technology to provide a complete solution for non-invasive physiological signal detection.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official resources for potential obsolescence notifications or alternative product recommendations.