TMD2772WA Datasheet, PDF (1/59 Pages) ams AG – Digital ALS and Proximity Module

TMD2772/
TMD2772WA
Digital ALS and Proximity Module
General Description
The TMD2772/TMD2772WA 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 and are
available with 25° and 50° fields of view. The ALS enhancements
include a reduced-gain mode that extends the operating range
in sunlight. Proximity detection includes improved
signal-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 signals that the internal
analog circuitry has reached saturation.
The TMD2772/TMD2772WA ALS is based on the ams 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.
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of TMD2772/TMD2772WA, Digital ALS
and Proximity Module are listed below:
Figure 1:
Added Value of Using TMD2772/TMD2772WA
Benefits
Features
Minimizes board space requirements
Approximates Human Eye Response over a wide
variety of lighting conditions. Achieves accurate
sensing behind spectrally dark glass.
Ambient Light Sensing, Proximity Detection, and IR LED in
a Single Module
Ambient Light Sensing (ALS)
• Wide variety of programmable features which
enable 8,000,000:1 Dynamic Range with very High
Sensitivity
ams Datasheet, Confidential
[v1-20] 2014-Jul-21
Page 1
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