BH1721FVC
● Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V, Ta = 25 ℃ , unless otherwise noted )
Technical Note
Parameter
Symbol
Limits
Min. Typ. Max.
Units
Conditions
Supply Current
Icc1
140
199
μA
Ev = 100 lx
※ 1
EV = 1000 lx ※ ※
Powerdown Current
Peak Wave Length
Measurement Accuracy
Icc2
λ p
S/A
1.02
0.01
560
1.2
1.0
1.38
μA
nm
times
No input Light
Sensor out / Actual lx
1, 2
Dark ( 0 lx ) Sensor out
H-Resolution Mode Resolution
L-Resolution Mode Resolution
H-Resolution Mode
Measurement Time
L-Resolution Mode
Measurement Time
Incandescent /
Fluorescent Sensor out ratio
DVI Input ‘L’ Voltage
S0
rHR
rLR
tHR
tLR
rIF
VDVL
0
0
1
8
120
16
1
2
180
24
0.4
count
lx
lx
ms
ms
times
V
H-Resolution Mode
EV = 1000 lx
※ 3
I C Hold Time ( repeated )
SCL, SDA Input ‘H’ Voltage 1
SCL, SDA Input ‘H’ Voltage 2
SCL, SDA Input ‘L’ Voltage 1
SCL, SDA Input ‘L’ Voltage 2
SCL, SDA, Input ‘H’ Current
SCL, SDA, Input ‘L’ Current
I 2 C SCL Clock Frequency
I 2 C Bus Free Time
2
START Condition
I 2 C Set up time
for a Repeated START Condition
I 2 C Set up time
for a Repeated STOP Condition
I 2 C Data Hold Time
I 2 C Data Valid Time
I 2 C Data Valid Acknowledge Time
I 2 C Data Setup Time
I 2 C ‘L’ Period of the SCL Clock
I 2 C ‘H’ Period of the SCL Clock
I 2 C SDA Output ‘L’ Voltage
VIH1
VIH2
VIL1
VIL2
IIH
IIL
fSCL
tBUF
tHDSTA
tSUSTA
tSUSTO
tHDDAT
tVDDAT
tVDACK
tSUDAT
tLOW
tHIGH
VOL
0.7 * DVI
1.26
1.3
0.6
0.6
0.6
0
100
1.3
0.6
0
0.3 * DVI
DVI – 1.26
10
10
400
0.9
0.9
0.4
V
V
V
V
μA
μA
kHz
μs
μs
μs
μs
μs
μs
μs
ns
μs
μs
V
DVI ≧ 1.8V
1.65V ≦ DVI < 1.8V
DVI ≧ 1.8V
1.65V ≦ DVI < 1.8V
IOL = 3 mA
※ 1 White LED is used as optical source.
※ 2 Measurement Accuracy typical value is possible to change '1' by "Measurement result adjustment function".
※ 3 Use H-Resolution Mode if dark data ( less than 20 lx ) is need.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
2/15
2011.11 - Rev.B
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