ADPD1080WBCPZR7

Overview

The ADPD1080WBCPZR7 is an automotive-grade photometric front end from Analog Devices, designed for health monitoring applications. It integrates a 14-bit analog-to-digital converter (ADC), a 20-bit burst accumulator, and three LED drivers capable of 370 mA peak current. The device operates on a single 1.8 V supply with a voltage range of 1.7 V to 1.9 V. It features four photodiode channels and communicates via an I2C interface. The component supports flexible sampling frequencies ranging from 0.122 Hz to 2700 Hz and includes ambient light rejection capabilities. It is housed in a 28-lead LFCSP package and functions within an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrated signal processing core combining AFE, ADC, and timing control for efficient optical measurements
• Ambient light rejection capability that eliminates the need for external optical filters or DC cancellation circuitry
• Flexible LED driver architecture supporting multiple short pulses per optical sample period
• High-resolution data accumulation enabling up to 27 bits of effective resolution through internal averaging

Applications

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

Procurement Notes

Verify the specific suffix WBCPZR7 against official documentation to confirm automotive qualification and reel packaging specifications. Ensure compatibility with the required I2C interface logic levels and power supply constraints before integration. Cross-reference the pinout configuration for the 28-lead LFCSP package to validate board layout requirements.

Selection Notes

Select this component when automotive reliability standards are required for photometric sensing. The integrated I2C interface simplifies system design compared to SPI-only variants. Consider the 28-lead package size if space allows for four dedicated photodiode inputs. Evaluate the 370 mA LED driver capability against the optical path requirements of the target application.

Part Context

This part belongs to the ADPD1080/ADPD1081 family of multifunction photometric front ends. The ADPD1080 variant specifically provides an I2C interface, whereas the ADPD1081 uses SPI. The WBCPZR7 designation indicates the automotive grade version packaged in a 28-lead LFCSP format. This distinguishes it from consumer-grade versions and smaller WLCSP packages available in the same product line.

Replacement Considerations

The ADPD1081 serves as a functional alternative if SPI communication is preferred over I2C. For non-automotive applications, standard commercial grade versions of the ADPD1080 may be considered. Smaller footprint options exist in the WLCSP package formats, though they offer fewer photodiode connections.