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BH1751FVI 반도체 회로 부품 판매점

Digital 16bit Serial Output Type Ambient Light Sensor IC



ROHM Semiconductor 로고
ROHM Semiconductor
BH1751FVI 데이터시트, 핀배열, 회로
www.DataSheet4U.com
Ambient Light Sensor IC Series
Digital 16bit Serial Output Type
Ambient Light Sensor IC
BH1751FVI
No.10046EAT09
Descriptions
BH1751FVI is an digital Ambient Light Sensor IC for I2C bus interface. This IC is the most suitable to obtain the ambient light
data for adjusting LCD and Keypad backlight power of Mobile phone. It is possible to detect wide range at High resolution.
( 1 - 65535 lx ).
Features
1) I2C bus Interface (f / s Mode Support)
2) Spectral responsibility is approximately human eye response
3) Illuminance to Digital Converter
4) Wide range and High resolution. (1 - 65535 lx)
5) Low Current by power down function
6) 50Hz / 60Hz Light noise reject-function
7) 1.8V Logic input interface
8) No need any external parts
9) Light source dependency is little. (ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light )
10) It is possible to select 2 type of I2C slave-address.
11) Adjustable measurement result for influence of optical window
( It is possible to detect min. 0.11 lx, max. 100000 lx by using this function. )
12) Small measurement variation (+/- 20%)
13) The influence of infrared is very small.
14) Build in power on reset circuit
Applications
Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, Car navigation, PDA,
LCD display
Absolute Maximum Ratings
Parameter
Symbol
Limits
Supply Voltage
Vmax
4.5
Operating Temperature
Topr
-4085
Storage Temperature
Tstg
-40100
SDA Sink Current
Imax
7
Power Dissipation
Pd
260
70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 3.47mW/for operating above Ta=25.
Units
V
mA
mW
Operating Conditions
Parameter
VCC Voltage
I2C Reference Voltage
Symbol
Vcc
VDVI
Min. Typ. Max. Units
2.4 3.0 3.6
V
1.65 - VCC V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/16
2010.02 - Rev.A


BH1751FVI 데이터시트, 핀배열, 회로
BH1751FVI
Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V, Ta = 25, unless otherwise noted )
Parameter
Symbol Min. Typ. Max. Units
Technical Note
www.DataSheet4U.com
Conditions
Supply Current
Icc1
120 190 µA Ev = 100 lx 1
Powerdown Current
Icc2
0.85 1.5 µA No input Light
Peak Wave Length
Measurement Accuracy
Dark ( 0 lx ) Sensor out
λp 560 nm
S/A 0.96
1.2
1.44
times
Sensor out / Actual lx
EV = 1000 lx 1, 2
S0 0 0 3 count H-Resolution Mode 3
H-Resolution Mode Resolution
rHR 1 lx
L-Resolution Mode Resolution
rLR 4 lx
H-Resolution Mode Measurement Time
tHR
120 180 ms
L-Resolution Mode Measurement Time
tLR 16 24 ms
Incandescent / Fluorescent Sensor out ratio
rIF
1
times EV = 1000 lx
ADDR Input ‘H’ Voltage
VAH 0.7 * VCC
V
ADDR Input ‘L’ Voltage
VAL
0.3 * VCC V
DVI Input ‘L’ Voltage
VDVL
0.4 V
SCL, SDA Input ‘H’ Voltage 1
VIH1 0.7 * DVI
V DVI 1.8V
SCL, SDA Input ‘H’ Voltage 2
VIH2
1.26
V 1.65V DVI 1.8V
SCL, SDA Input ‘L’ Voltage 1
VIL1
0.3 * DVI V DVI 1.8V
SCL, SDA Input ‘L’ Voltage 2
VIL2
DVI – 1.26 V 1.65V DVI 1.8V
SCL, SDA, ADDR Input ‘H’ Current
IIH - - 10 µA
SCL, SDA, ADDR Input ‘L’ Current
IIL - - 10
I2C SCL Clock Frequency
fSCL
400
I2C Bus Free Time
tBUF
1.3
I2C Hold Time ( repeated ) START Condition
tHDSTA
0.6
I2C Set up time for a Repeated START Condition tSUSTA
0.6
I2C Set up time for a Repeated STOP Condition tSUSTD
0.6
I2C Data Hold Time
tHDDAT
0
0.9
I2C Data Setup Time
tSUDAT
100
I2C ‘L’ Period of the SCL Clock
tLOW
1.3
I2C ‘H’ Period of the SCL Clock
tHIGH
0.6
I2C SDA Output ‘L’ Voltage
VOL 0
0.4
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 or H-resolution mode2 if dark data ( less than 10 lx ) is need.
µA
kHz
µs
µs
µs
µs
µs
ns
µs
µs
V IOL = 3 mA
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/16
2010.02 - Rev.A




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BH1751FVI

Digital 16bit Serial Output Type Ambient Light Sensor IC - ROHM Semiconductor