BH1771GLC-E2 Datasheet, PDF (1/33 Pages) Rohm – 1 Chip Optical Proximity Sensor + Ambient Light Sensor IC

Ambient Light Sensor ICs
1 Chip Optical Proximity Sensor +
Ambient Light Sensor IC
BH1771GLC
No.11046EBT11
●Descriptions
BH1771GLC is the IC into which optical proximity sensor and digital ambient light senor are unified. Proximity sensor part
detects the human or object approach by reflection of infrared LED(IrLED) light. And this device can drive maximum 3 IrLEDs,
and touch-less motion detection function can be implemented. Ambient light part can detect the wide range illuminance from
the dark up to under direct sun light. The illuminant intensity of LCD display and keypad can be adjusted, so lower current
consumption or higher visibility are possible.
●Features
1) Correspond to I²C bus interface ( f/s mode & Hs mode support )
2) Low Current by power down function
3) Correspond to 1.8V logic interface
4) ALS spectral responsibility is approximately human eye response ( Peak wavelength : typ. 550nm )
5) Correspond to wide range of light intensity ( 1-65535 lx range )
6) Rejecting 50Hz/60Hz light noise (ALS function)
7) Detection range of proximity sensor is around 10 - 100mm (configurable by I²C bus)
8) Touch-less motion detection function
9) Built in ambient light cancelation (Proximity sensor function)
10) Built in configurable IrLED current driver
●Applications
Mobile phone, DSC, Portable game, Camcoder, Car navigation, PDA, LCD display etc.
●Absolute Maximum Ratings ( Ta = 25℃ )
Parameter
Symbol
Ratings
Units
VCC, Supply Voltage
SDA,SCL,GNDNC Terminal Voltage
LED1,LED2,LED3 INT Terminal Voltage
Vccmax
VSDAmax, VSCLmax,
VGNDNCmax
VLEDmax, VINTmax
4.5
V
4.5
V
7
V
Operating Temperature
Topr
-40～85
℃
Storage Temperature
Tstg
-40～100
℃
SDA, INT Sink Current
Imax
7
mA
Power Dissipation
Pd
250^※
※ 70mm × 70mm × 1.6mm glass epoxy board. Decreasing rate is 3.33mW/℃ for operating above Ta=25℃
mW
●Operating Conditions
Parameter
VCC Voltage
LED1,LED2,LED3 Terminal Voltage
Symbol
Vcc
Vled
Ratings
Min.
Typ. Max.
2.3
2.5
3.6
0.7
2.5
5.5
Units
V
V
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2011.06 - Rev.B