TMG3993
Gesture, Color, ALS, and Proximity
Sensor Module with mobeam™
Barcode Emulation
General Description
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
I
2
C 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.
ams Datasheet
[v1-07] 2016-Oct-25
Page 1
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TMG3993 −
General Description
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 timing, looping, and IR
intensity to maximize successful barcode reception rate among
the multitude of different barcode scanner/readers currently in
use globally.
Ordering Information
and
Content Guide
appear at end of
datasheet.
Key Benefits & Features
The benefits and features of TMG3993, Gesture, Color, ALS, and
Proximity Sensor Module with mobeam™ Barcode Emulation
are listed below:
Figure 1:
Added Value of Using TMG3993
Benefits
•
Single Device Integrated Optical
Solution
Features
•
Gesture Detection, Proximity, Color/ALS and IRBeam
Support
•
Power Management Features
•
UV and IR blocking filters
•
Programmable Gain & Integration Time
•
16.7M:1 Dynamic Range
•
•
•
•
•
•
Four separate diodes sensitive to different directions
Ambient Light Rejection
Offset Compensation
Programmable Driver for IR LED current
32 Dataset storage FIFO
Interrupt Driven I²C Communication
•
Ambient Light Sensing
•
Complex Gesture Sensing
•
Ideal for Operation Behind Dark Glass
•
Very High Sensitivity
•
•
•
•
•
•
Trimmed to provide consistent reading
Ambient Light Rejection
Proximity Offset Compensation
Saturation Indicator bit
Programmable Driver for IR LED current
98,000:1 Dynamic Range
•
Proximity Detection
•
Barcode Pattern Generation and
Transmission
•
Dual Use of a Single Internal LED
•
IRBeam Hardware Support
•
Pattern Storage in Internal RAM
•
Integrated LED driver with current control for both Proximity
and IRBeam
Page 2
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ams Datasheet
[v1-07] 2016-Oct-25
TMG3993 −
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
(1)
Symbol
V
DD
Parameter
Supply voltage
Min
Max
3.8
4.8
Units
V
V
V
V
V
V
V
mA
ºC
V
Comments
All voltages are with respect to GND
T
A
= 0 to 70ºC
T
A
= -30 to 85ºC
LEDA
Supply voltage
4.4
Digital I/O terminal voltage
- 0.5
3.8
4.4
T
A
= -30 to 85ºC
(2)
T
A
= 0 to 70ºC
(2)
T
A
= -30 to 85ºC
(3)
LDR
Max voltage
4.8
3.8
(SDA, INT)
T
stg
ESD
HBM
Output terminal current
Storage temperature range
ESD tolerance, human
body model
-1
- 40
±2000
20
85
Note(s):
1. All voltages with respect to GND
2. Measured with LDR = OFF.
3. LDR = ON.
ams Datasheet
[v1-07] 2016-Oct-25
Page 5
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