TMG3992 Datasheet, PDF (1/95 Pages) ams AG – Gesture, Color, ALS, and Proximity Sensor Module with mobeam Barcode Emulation

General Description
ams Datasheet
[v1-04] 2014-Oct-24
TMG3992
Gesture, Color, ALS, and Proximity
Sensor Module with mobeam™
Barcode Emulation
The device features advanced Gesture detection, Proximity
detection, Digital Ambient Light Sense (ALS), Color Sense
(RGBC), and optical pattern generation/transmission for
broadcast. The slim modular package,
2.0mm × 3.95mm × 1.36mm, incorporates an IR LED and factory
calibrated LED driver.
Gesture detection utilizes four directional photodiodes to
sense reflected IR energy (sourced by the integrated LED) to
convert physical motion information (i.e. velocity, direction and
distance) to a digital information. The architecture of the
gesture engine features automatic activation (based on
Proximity engine results), ambient light subtraction, cross-talk
cancelation, dual 8-bit data converters, power saving
inter-conversion delay, 32-dataset FIFO, and interrupt driven
I²C communication. The gesture engine accommodates a wide
range of mobile device gesturing requirements: simple
North-South-East-West gestures or more complex gestures can
be accurately sensed. Power consumption and noise are
minimized with adjustable IR LED timing.
The Proximity detection feature provides object detection (E.g.
mobile device screen to user’s ear) by photodiode detection of
reflected IR energy (sourced by the integrated LED).
Detect/release events are interrupt driven, and occur whenever
proximity result crosses upper and/or lower threshold settings.
The proximity engine features offset adjustment registers to
compensate for system offset caused by unwanted IR energy
reflections appearing at the sensor. The IR LED intensity is
factory trimmed to eliminate the need for end-equipment
calibration due to component variations. Proximity results are
further improved by automatic ambient light subtraction.
The Color and ALS detection feature provides red, green, blue
and clear light intensity data. Each of the R, G, B, C channels
have a UV and IR blocking filter and a dedicated data converter
producing16-bit data simultaneously. This architecture allows
applications to accurately measure ambient light and sense
color which enables devices to calculate illuminance and color
temperature, control display backlight, and chromaticity.
mobeam™ barcode emulation is achieved using the IRBeam
optical pattern generation/transmission feature. IRBeam is
primarily intended for 1-D barcode transmission over IR to
point-of-sale (POS) terminals. The IRBeam engine features a
1024-bit RAM for pattern storage and specialized control logic
that is tailored to repetitively broadcast a barcode pattern using
the integrated LED. The IRBeam engine features adjustable
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