ADPD106BCBZR7

Overview

The ADPD106BCBZR7 is a multifunction photometric front end from Analog Devices, featuring an integrated 14-bit ADC and a 20-bit burst accumulator. It supports flexible LED drivers with peak currents up to 370 mA and offers best-in-class ambient light rejection without requiring optical filters. The device operates on a 1.8 V analog/digital core (1.7 V to 1.9 V range) and utilizes an SPI interface for data output and configuration. Sampling frequencies are adjustable from 0.122 Hz to 3820 Hz, supporting FIFO data operation and low-power standby modes.

Feature Summary

• Integrated 14-bit ADC with 20-bit burst accumulator enabling up to 27 bits per data read via sample averaging.
• Three independent LED drivers capable of delivering up to 370 mA peak current with flexible pulse timing.
• SPI digital interface operating at clock frequencies up to 10 MHz.
• Ambient light rejection capability eliminating the need for external photodiode optical filters.

Applications

• Wearable health and fitness monitors
• Clinical measurements such as SpO2 monitoring
• Industrial optical monitoring systems
• Background light measurement applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and interface variations. Ensure compatibility with the required SPI communication protocol and voltage levels during component sourcing.

Selection Notes

Select this component for applications requiring high-resolution photometric sensing with minimal external filtering. Confirm that the system design accommodates the 1.8 V supply requirement and that the PCB layout supports the WLCSP package thermal and electrical characteristics.

Part Context

The ADPD106 belongs to the ADPD105/ADPD106/ADPD107 family of photometric front ends. Unlike the ADPD105 which supports I2C, the ADPD106 is designated for SPI-only communication. It shares the same functional block diagram and performance specifications regarding LED driving and signal processing capabilities within the series.

Replacement Considerations

The ADPD105 serves as a pin-compatible alternative if I2C interface support is required instead of SPI. The ADPD107 is functionally identical to the ADPD106 but may differ in specific package or manufacturing lot details; verify datasheet revisions for interchangeability.