TMD4903 Datasheet, PDF (9/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

TMD4903 − Electrical Characteristics
Figure 10:
Proximity Operating Characteristics, VDD = 1.8 V, TA = 25ºC (unless otherwise noted)
Parameter
ADC conversion time step size
Offset
(no target response) ⁽¹⁾
Part to part variation ⁽²⁾
Response, absolute ⁽³⁾
Noise/Signal ⁽⁴⁾
Conditions
PGAIN = 2 (4x)
PGLDRIVE = 7 (150mA)
PGPULSE_LEN = 1 (8us)
No target present
After electrical calibration
PGAIN = 2 (4x)
PGLDRIVE = 1 (30mA)
PGPULSE_LEN = 1 (8us)
d=23mm round target
30mm target distance
After electrical calibration
PGAIN = 2 (4x)
PGLDRIVE = 7 (150mA)
PGPULSE_LEN = 1 (8us)
100x100mm, 90% reflective
Kodak gray card
100mm target distance
After electrical calibration
PGAIN = 2 (4x)
PGLDRIVE = 2 (50mA)
PGPULSE_LEN = 1 (8us)
PGPULSE = 7 (8 pulses)
Min Typ Max Unit
20
μs
16
36
counts
75
100 125
%
790 990 1190 counts
2
%
Note(s) and/or Footnote(s):
1. Offset varies with power supply characteristics and system noise.
2. Production tested result is the average of 5 readings expressed relative to a calibrated response.
3. Representative result by characterization. Device settings can vary from 1 to 64 pulse count, 4μs to 32μs pulse width, 10mA to 310mA
current setting, and 1x to 8x electrical gain. Refer to Figure 22 for device performance with different settings.
4. Production tested result is the range of 20 readings divided by the average response.
ams Datasheet
[v1-12] 2015-May-14
Page 9
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