TMG4903
Gesture, Color and Proximity Sensor
Module with mobeam™ Barcode
Emulation and IR Remote Control
General Description
The TMG4903 features ambient light and color (RGB) sensing,
proximity detection, and IRBeam optical pattern generator
capable of mobeam™ barcode emulation and IR remote control
in parallel. 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 Gesture and Proximity sensing function synchronizes IR
emission and detection to sense gesture and proximity events.
The architecture of the engine features automatic high sample
rate activation, 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
gesture engine is capable of 3D detection of motion and
position. Gesture interrupts are configurable to reduce I²C
communication load.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
[v1-03] 2017-May-29
Page 1
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TMG4903 −
General Description
Key Benefits & Features
The benefits and features of TMG4903, Gesture, Color and
Proximity Sensor Module with mobeam™ Barcode Emulation
and IR Remote Control are listed below:
Figure 1:
Added Value of Using TMG4903
Benefit
Feature
•
Automatic sample rate adjustment
(1)
•
•
•
•
•
•
•
•
•
•
•
•
•
Self-maximizing dynamic range
(2)
2D and 3D gesture detect
Ambient light rejection
Advanced crosstalk compensation
AFE saturation flag
Programmable LED driver
Interrupt-driven I²C communication
Variable sensitivity
Designed to operate behind inked glass
UV/IR blocking filter
Programmable gain and integration time
6.7M:1 dynamic range by gain adjustment only
Interrupt-driven I²C communication
•
2D and 3D gesture and proximity detection
•
Ambient light and color sensing
•
IRBeam pattern generator
•
mobeam™ support
•
Universal remote control support
•
Interrupt-driven I²C communication
•
Calibrated emission and response
•
Invisible 950nm emission
•
1.8V operation
•
Integrated LED and driver
•
Low supply voltage
Note(s):
1. While an object is detected, the sample rate increases automatically to improve response.
2. Device sensitivity is automatically adjusted based on reflected response to support a wide detection distance.
Applications
The TMG4903 applications include:
•
Gesture detection
•
Color sensing
•
Ambient light sensing
•
Cell phone touch screen disable
•
Mechanical switch replacement
•
1D bar code emulation
•
Universal remote control
Page 2
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ams Datasheet
[v1-03] 2017-May-29
TMG4903 −
Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. These are stress
ratings only. Functional operation of the device at these or any
other conditions beyond those indicated under
Recommended
Operating Conditions
is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Figure 5:
Absolute Maximum Ratings
Symbol
V
DD
V
LEDA
V
IO
V
LDR
I
IO
T
strg
ESD
HBM
Parameter
Supply voltage
LED anode supply
Digital I/O terminal voltage
Terminal voltage
Output terminal current
Storage temperature range
ESD tolerance, human body
model
Min
-0.3
-0.3
-0.3
-0.3
-1
-40
±2000
Max
2.2
3.6
3.6
3.6
20
85
Units
V
V
V
V
mA
ºC
V
Comments
See note
(2)
Note(s):
1. All voltages with respect to GND
2. Measured with LDR = OFF or LDR = ON and LDRIVE = 310mA.
ams Datasheet
[v1-03] 2017-May-29
Page 5
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