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Ambient Light Sensor IC Series
Digital 16bit Serial Output Type
Ambient Light Sensor IC
BH1751FVI
No.11046EBT09
BH1751FVI is an digital Ambient Light Sensor IC for I C bus interface. This IC is the most suitable to obtain the ambient light
● Descriptions
2
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, PDA, LCD display
● Absolute Maximum Ratings
Parameter
Supply Voltage
Operating Temperature
Storage Temperature
SDA Sink Current
Power Dissipation
Symbol
Vmax
Topr
Tstg
Imax
Pd
Ratings
4.5
-40 ～ 85
-40 ～ 100
7
260 ※
Units
V
℃
℃
mA
mW
※ 70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 3.47mW/ ℃ for operating above Ta=25 ℃ .
● Operating Conditions
Parameter
VCC Voltage
I 2 C Reference Voltage
Symbol
Vcc
V DVI
Min.
2.4
1.65
Ratings
Typ.
3.0
-
Max.
3.6
V CC
Units
V
V
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? 2011 ROHM Co., Ltd. All rights reserved.
1/16
2011.11 - Rev.B
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