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PDF TMG3992 Data sheet ( Hoja de datos )
| Número de pieza | TMG3992 | |
| Descripción | Gesture / Color / ALS and Proximity Sensor Module | |
| Fabricantes | ams | |
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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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TMG3992 − Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Rating”
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 (all voltages with respect to GND)
Symbol
Parameter
Min Max Units
Comments
VDD
LEDA
Supply voltage
Supply voltage
Digital I/O terminal voltage - 0.5
3.8
4.8
4.4
3.8
V All voltages are with respect to GND
V TA = 0 to 70ºC
V TA = -30 to 85ºC
V
LDR Max voltage
(SDA, INT) Output terminal current
4.4 V TA = -30 to 85ºC (1)
4.8 V TA = 0 to 70ºC (1)
3.8 V TA = -30 to 85ºC (2)
- 1 20 mA
Tstg Storage temperature range - 40 85 ºC
ESD tolerance, human
body model
-2000 2000 V
Note(s) and/or Footnote(s):
1. Measured with LDR = OFF.
2. LDR = ON.
ams Datasheet
[v1-04] 2014-Oct-24
Page 5
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TMG3992 − Electrical Characteristics
Parameter
Conditions
Min Typ Max
Proximity Offset
(no target response) (5)
PGAIN = 2 (4X)
LDRIVE = 0
LEDBOOST = 1
PPLEN = 2
PPULSE= 2 (3 pulses)
100mm X 100mm 90%
reflective Kodak Grey
Card at 100mm distance
4
PGAIN = 2 (4X)
LDRIVE = 1
LEDBOOST = 0
Relative Proximity Response (6) PPLEN = 1
75 100 125
PPULSE= 5 (6 pulses)
d=23mm round target
at 30mm distance
Proximity Response (7)
PGAIN = 2 (4X)
LDRIVE = 0
LEDBOOST = 1
PPLEN = 2
PPULSE= 2 (3 pulses)
80 100 120
100mm X 100mm 90%
reflective Kodak Grey
Card at 100mm distance
Units
counts
%
counts
Note(s) and/or Footnote(s):
1. This parameter ensured by design and characterization and is not 100% tested.
2. Value may be as much as 1.36μs longer than specified.
3. Value is factory-adjusted to meet the Proximity response specification. Considerable variation (relative to the typical value) is possible
after adjustment. LEDBOOST increases current setting (as defined by LDRIVE or GLDRIVE). For example, if LDRIVE = 0 and
LEDBOOST = 300%, LDR current is 300mA.
4. LEDBOOST multiplies LDR current by the percentage selected.
5. Proximity offset value varies with power supply characteristics and system noise.
6. Production tested value is the average of 5 readings.
7. Correlated result by characterization. Refer to Figure 25 and Figure 26 for typical operating settings.
ams Datasheet
[v1-04] 2014-Oct-24
Page 11
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| PDF Descargar | [ Datasheet TMG3992.PDF ] | |
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