TMD4903 Datasheet, PDF (1/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

General Description
TMD4903
Color and Proximity Sensor Module
with mobeam™ Barcode Emulation
and IR Remote Control
The TMD4903 features ambient light and color (RGB) sensing,
proximity detection and IRBeam optical pattern generator
capable of mobeam™ barcode emulation and IR remote control.
In addition, the device integrates an IR LED and advanced LED
driver, all within a low-profile and small footprint,
2.0mm x 5.0mm x 1.0mm package.
The Proximity sensing function synchronizes IR emission and
detection to sense proximity events. The architecture of the
engine features self-maximizing dynamic range, ambient light
subtraction, advanced crosstalk cancelation, 14-bit data
output, 32-dataset FIFO, and interrupt-driven I²C
communication. Sensitivity, power consumption, and noise can
be optimized with adjustable IR LED timing and power. The
proximity engine recognizes detect/release events and
produces a configurable interrupt whenever proximity result
crosses upper or lower threshold settings.
The Ambient Light and Color Sensing function provides Red,
Green, and Blue (RGB) ambient light sensing with a Clear
reference (C). The color diode array has a UV/IR blocking filter
and parallel ADCs to produce simultaneous 16-bit results. This
architecture accurately measures ambient light and enables the
calculation of illuminance, chromaticity, and color temperature
to manage display appearance.
The IRBeam pattern generator supports mobeam™ barcode
emulation and IR remote control. The engine features RAM for
pattern storage and specialized control logic that is tailored to
repetitively broadcast a barcode pattern using the integrated
LED or an external LED with a low side driver. The IRBeam engine
features adjustable timing, looping, and IR intensity to
maximize successful transmission. IRBeam is designed to
support all requirements for 1-D barcode transmission over IR
to point-of-sale (POS) terminals as well as IR remote control.
Ordering Information and Content Guide appear at end of
datasheet.
ams Datasheet
[v1-12] 2015-May-14
Page 1
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