APDS-9702-020

Overview

The APDS-9702-020 is a proximity sensor interface IC from the Broadcom APDS series, designed for optical proximity sensing applications. It operates on a single supply voltage ranging from 2.4 V to 3.6 V and draws a typical operating current of 100 μA. The device supports I2C digital communication interfaces for data transfer. It functions within an ambient temperature range of -40°C to +85°C and is housed in an 8-pin QFN surface-mount package.

Feature Summary

• Integrated signal conditioning circuitry optimized for proximity sensor applications
• Low power consumption suitable for battery-operated portable devices
• Digital I2C interface for simplified system integration

Applications

• Mobile phone screen dimming and touch disablement
• Smartphone cover detection mechanisms
• Portable electronic device user presence sensing

Procurement Notes

Verify component authenticity through authorized Broadcom distributors or certified suppliers. Confirm RoHS compliance status via official documentation. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering. Validate part markings against official datasheet specifications to prevent counterfeit introduction into the supply chain.

Selection Notes

Select this component when low standby current and small form factor are critical design constraints. The 2.4 V minimum supply voltage allows compatibility with single-cell lithium-ion battery systems. The QFN-8 package facilitates high-density PCB layouts. Verify that the host microcontroller supports the required I2C protocol speeds for adequate data throughput.

Part Context

This part belongs to the Broadcom APDS family of sensor interface solutions. These components typically bridge optical sensors and host processors, handling analog-to-digital conversion and signal processing. The APDS-9702 variant specifically targets proximity detection tasks rather than ambient light measurement, distinguishing it from other members in the broader APDS portfolio.

Replacement Considerations

Check Broadcom's official obsolescence notices for discontinuation status. Evaluate pin-compatible alternatives only if electrical parameters match exactly. Verify that any substitute maintains identical I2C register maps and timing characteristics to avoid firmware modifications.