1/20
www.rohm.com
2012.02 - Rev.A
© 2012 ROHM Co., Ltd. All rights reserved.
Ambient Light Sensor ICs
Digital 16bit Serial Output Type
Ambient Light Sensor IC
BH1730FVC
●
Descriptions
BH1730FVC is a digital Ambient Light Sensor IC for I
2
C bus interface. This IC is the most suitable to obtain the ambient light
data for adjusting LCD backlight power of TV, mobile phone. It is possible to detect very wide range light intensity. (0.008 -
65535 lx ).
●
Features
1) I
2
C bus Interface ( f / s Mode Support, Slave address "0101001". )
2) There are two outputs that peaks of a spectrum response are in visible light (Type0) and in infrared light (Type1).
3) Illuminance to Digital Converter
4) Very wide range and High resolution. ( 0.008 - 65535 lx )
5) Low Current by power down function
6) 50Hz / 60Hz light noise reject-function
7) Correspond to 1.8V logic input interface
8) Light source dependency is little by calculating with Type0 and Type1.
( ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light )
9) Interrupt function is available.
10) Adjustable measurement result for influence of optical window
( It is possible to detect min. 0.001 lx, max. 100000 lx by using this function. )
11) Small measurement variation (+/- 15%)
12) Built in power on reset circuit.
●
Applications
LCD TV, Mobile phone, NOTE PC, Portable game machine, Digital camera, Digital video camera, PDA, LCD display
●
Absolute Maximum Ratings
Parameter Symbol
Limits
Units
Supply Voltage
V
CC
max
4.5 V
INT , SDA, DVI, SCL, Terminal Voltage
V
INT
max, V
SDA
max, V
DVI
max, V
SCL
max
7 V
Operating Temperature
Topr
-40
～
70
℃
Storage Temperature
Tstg
-40
～
100
℃
SDA, INT Sink Current
Imax
7
mA
Power Dissipation
Pd
260
※
mW
※
70mm
×
70mm
×
1.6mm glass epoxy board. Derating in done at 3.47mW/
℃
for operating above Ta=25
℃
.
●
Operating Conditions
Parameter Symbol
Min.
Typ.
Max.
Units
VCC Voltage
Vcc
2.4
3.0
3.6
V
I
2
C Reference Voltage
V
DVI
1.65 - V
CC
V
No.11046EAT13
