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| TMD4903 Datasheet, PDF (7/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam | |||
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TMD4903 â Electrical Characteristics
Figure 8:
ALS/Color Operating Characteristics, VDD = 1.8 V, TA = 25ºC, AGAIN = 16x, ATIME = 0xF6 (unless
otherwise noted)
Parameter
Integration time
step size(1), (2)
Conditions
Dark ADC count value (2)
Ee = 0 μW/ cm2
AGAIN: 64x
ATIME: 100ms (0xDC)
Gain scaling, relative to
16x gain setting
Clear channel irradiance
responsivity
Lux accuracy (3)
AGAIN: 1/4x
AGAIN: 1x
AGAIN: 4x
AGAIN: 64x
White LED, 2700K
White LED, 2700K
ADC Noise (4)
AGAIN: 16x
Min Typ Max
2.68
2.78
2.90
Units
ms
0
1
3
counts
0.0135
0.058
0.237
3.75
8.94 10.28
90
100
0.005
0.0175
0.067
0.263
4.37
11.62
110
x
counts/
(μW/ cm2)
%
% Full
Scale
Note(s) and/or Footnote(s):
1. Integration time is configured from 1 step (0xFF) to 256 steps (0x00) for a typical range of 2.78ms to 711.11ms. An ATIME setting of
0xFF results in a full-scale count value of 1024. Each additional integration step adds 1024 counts to full scale. To enable 16-bit ADC
range, 64 or more integration steps (177.8ms or more) are required (ATIME <= 0xC0).
2. The typical 3-sigma distribution is between 0 and 1 count for an AGAIN setting of 16x.
3. Lux accuracy is function of red, green, blue and clear channels, and not 100% production tested.
4. ADC noise is calculated as the standard deviation of 1000 data samples.
ams Datasheet
[v1-12] 2015-May-14
Page 7
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