TMG3993

Description
The TMD2772 family of devices provides digital ambient light sensing (ALS), a complete proximity detection
system, and digital interface logic in a single 8-pin surface mount module. The devices are register-set and
pin-compatible with the TMD2771 family of devices and include new and improved ALS and proximity detection
features. The ALS enhancements include a reduced-gain mode that extends the operating range in sunlight.
Proximity detection includes improved **-to-noise performance and more accurate factory calibration. A
proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor.
To prevent false proximity data measurement readings, a proximity saturation indicator bit **s that the
internal analog circuitry has reached saturation.
The TMD2772 ALS is based on the TAOS patented dual-diode technology that enables accurate results and
approximates human eye response to light intensity under a variety of lighting conditions. The proximity
detection system includes an LED driver and an IR LED, which are factory trimmed to eliminate the need for
end-equipment calibration due to component variations.