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Ambient Light Sensor IC Series
Digital 16bit Serial Output Type
Ambient Light Sensor IC
BH1721FVC
No.11046EBT10
BH1721FVC is an digital Ambient Light Sensor IC for I C bus interface. This IC is the most suitable to obtain the ambient
1) I C bus Interface ( f / s Mode Support, Slave Address : "0100011" )
● Descriptions
2
light data for adjusting LCD and Keypad backlight power of Mobile phone. It is possible to detect wide range at High
resolution. ( 1 - 65528 lx ).
● Features
2
2) Spectral responsibility is approximately human eye response
3) Illuminance to Digital Converter
4) Wide range and High resolution. (1 – 65528 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) Small measurement variation (+/- 15%)
11) Compact surface mount package 1.6 x 1.6 x 0.55 mm
● 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
165 ※
Units
V
℃
℃
mA
mW
※ 70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 2.2mW/ ℃ 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.
1/15
2011.11 - Rev.B
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