ADPD142RI-BCEZ-RL

Overview

The ADPD142RI-BCEZ-RL is a fully integrated photometric system module measuring 2.8 mm by 5 mm, designed for optical heart rate monitoring and reflective SpO2 measurement. It incorporates red and infrared LEDs alongside a photodiode to stimulate and measure optical return signals with high ambient light rejection. The analog front end features a 14-bit ADC equipped with a 20-bit burst accumulator, enabling up to 27 bits of resolution per data read through on-board sample-to-sample accumulation. Dual independent LED drivers provide up to 250 mA output current, while configuration and data transfer occur via a 1.8 V I2C interface.

Feature Summary

• Integrated dual-channel LED driver supporting separate settings for each channel
• High-resolution signal processing using a 14-bit ADC with 20-bit burst accumulator
• Advanced ambient light rejection capabilities for both DC and AC interference

Applications

• Optical heart rate monitoring
• Reflective SpO2 measurement

Procurement Notes

Verify the specific suffix codes against official documentation to confirm package type and reel specifications. Ensure compatibility with 1.8 V logic levels for the I2C interface during integration. Cross-reference the manufacturer's latest datasheet revision to validate pinout assignments and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when a compact solution for pulse oximetry or heart rate sensing is required. The integrated nature of the module reduces board space requirements compared to discrete designs. Consider the ADPD142RG variant if green LED illumination is preferred over infrared for specific motion tolerance requirements.

Part Context

This module belongs to the ADPD142 series of complete photometric systems from Analog Devices. It is engineered to simplify the design of wearable health monitoring devices by combining optical components and signal conditioning electronics into a single small form factor package.

Replacement Considerations

The ADPD142RG serves as a functional alternative within the same family, distinguished by its use of red and green LEDs instead of red and infrared.