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SI1145 Fiches technique(PDF) 9 Page - Silicon Laboratories

No de pièce SI1145
Description  Integrated infrared proximity detector
Download  70 Pages
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Fabricant  SILABS [Silicon Laboratories]
Site Internet  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI1145 Fiches technique(HTML) 9 Page - Silicon Laboratories

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Si1145/46/47-M01
Rev. 1.0
9
Large Infrared Photodi-
ode Noise
All gain settings
10
ADC
counts
RMS
Visible Photodiode Offset
Drift
VIS_RANGE = 0
ALS_VIS_ADC_GAIN = 0
ALS_VIS_ADC_GAIN = 1
ALS_VIS_ADC_GAIN = 2
ALS_VIS_ADC_GAIN = 3
ALS_VIS_ADC_GAIN = 4
ALS_VIS_ADC_GAIN = 5
ALS_VIS_ADC_GAIN = 6
ALS_VIS_ADC_GAIN = 7
–0.3
–0.11
–0.06
–0.03
–0.01
–0.008
–0.007
–0.008
ADC
counts/
°C
Small Infrared Photodiode
Offset Drift
IR_RANGE = 0
IR_GAIN = 0
IR_GAIN = 1
IR_GAIN = 2
IR_GAIN = 3
–0.3
–0.06
–0.03
–0.01
ADC
counts/
°C
SCL, SDA, INT Output
Low Voltage
VOL
I = 4 mA, VDD > 2.0 V
I = 4 mA, VDD < 2.0 V
VDDx0.
2
0.4
V
V
Temperature Sensor Off-
set
25 °C
11136
ADC
counts
Temperature Sensor Gain
35
ADC
counts/
°C
Table 2. Performance Characteristics1 (Continued)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Notes:
1. Unless specifically stated in "Conditions", electrical data assumes ambient light levels < 1 klx.
2. Proximity-detection performance may be degraded, especially when there is high optical crosstalk, if the LED supply
and voltage drop allow the driver to saturate and current regulation is lost.
3. Guaranteed by design and characterization.
4. Represents the time during which the device is drawing a current equal to Iactive for power estimation purposes.
Assumes default settings.


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