LS521 Datasheet, PDF (4/12 Pages) Silicon Touch Technology Inc. – Tunable illumination sensitivity by an external resistor

點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ELECTRICAL CHARACTERISTICS (V_DD=3V, T_A=25℃ if not mentioned )
LS521
Item
Symbol
Test Conditions
SMBus Output Low Voltage
Supply Current
High Level Input Current
I_O =10uA
V_OL
I_O =350uA
V_DD
Power-up,
=3V
V_SMBCLK =V_SMBDAT=V_DD, Ee =0, V_DD
=5.5V
V_DD
I_DD
Power-down,
=3V
V_SMBCLK=V_SMBDAT = V_DD, Ee =0 V_DD
=5.5V
V_DD
Shut-down ADC,
=3V
V_SMBCLK=V_SMBDAT =V_DD, Ee =0 V_DD
=5.5V
I_IH V_SDA(or V_SCL)=V_DD
Low Level Input Current
I_IL V_SDA(or V_SCL)= 0V
Min. Typ. Max. Unit
-
0.01
-
V
-
-
0.4 V
-
0.38 0.43
mA
-
0.65 0.75
-
30
35
uA
-
80
92
-
0.33 0.38
mA
-
0.6 0.7
-
-
5 uA
-
-
-5 uA
DC OPERATING CHARACTERISTICS (VDD=3V, TA=25℃, RL=11.9kΩ, CL=100uF, unless
otherwise noted)
Item
Full scale ADC count
ADC count value
Symbol
-
Test Conditions
-
D_OUT
Ee =0
Ee =400 lux,
Fluorescent light (note.1)
Min. Typ. Max. Unit
-
-
255 counts
-
0
2
counts
83
104
125
Illuminance responsivity
Rv Fluorescent light (note.1)
NOTE: 1. Using a white LED as the fluorescent light source.
0.208
0.26
0.312
counts/
lux
MAXIMUM ILLUMINANCE RANGE SETTING
ILLUMINATION-TO-DIGITAL CONVERTER with SMBUS INTERFACE
Version：A.002 Page3