TMG3993 Datasheet, PDF (1/95 Pages) ams AG – Gesture, Color, ALS, and Proximity Sensor Module with mobeam Barcode Emulation

General Description
ams Datasheet
[v1-06] 2015-Apr-09
TMG3993
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,
2.36mm × 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
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