描述 Description

The TMD2771 family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 8-pin package. The proximity detector includes a digital proximity sensor, LED driver, and IR LED, which are trimmed to eliminate the need for end equipment calibration due to component variations. Excellent background light rejection allows the device to operate in environments from sunlight to dark rooms. The wide dynamic range allows for operation in short distance detection such as a cell phone (behind dark glass). An internal state machine provides the ability to put the device into a low power mode in between ALS and proximity measurements, providing very low average power consumption.

特性 Features

·Integrated ALS, proximity sensor, and IR LED
·ALS based on patented dual-diodes
·1M:1 dynamic range
·Proximity detection calibrated and trimmed to provide consistent reading
·Programmable LED drive current

應(yīng)用 Application

·Touchscreen control
·Display backlight control
·Medical diagnostics
·Industrial process control
·Optical switch