1 Chip Optical Proximity Sensor + Ambient Light Sensor - Rohm
Description
Ambient Light Sensor ICs
1 Chip Optical Proximity Sensor + Ambient Light Sensor IC
BH1772GLC
No.
11046EBT12
●Descriptions BH1772GLC 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.
Ambient light sensor 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) Built in ambient light cancelation (Proximity sensor function) 9) 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
VCC, Supply Voltage SDA,SCL,GNDNC Terminal Voltage LEDC,INT Terminal Voltage
Vccmax VSDAmax, VSCLmax,
VGNDNCmax VLEDCmax, VINTmax
4.
5 4.
5 7
Operating Temperature
Topr -40～85
Storage Temperature
Tstg -40～100
SDA, INT Sink Current
Imax
7
Power Dissipation
Pd 250※
※ 70mm × 70mm × 1.
6mm glass epoxy board.
Decreasing rate is 3.
33mW/℃ for operating above Ta=25℃
Units V
V
V ℃ ℃ mA mW
●Operating Conditions
Parameter
VCC Voltage LEDC Terminal Voltage
Symbol
Vcc Vledc
Ratings Min.
Typ.
Max.
2.
3 2.
5 3.
6 0.
7 2.
5 5.
5
Units
V V
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1/30
2011.
06 - Rev.
B
BH1772GLC
Technical note
●Electrical characteristics ( Vcc = 2.
5V, Ta = 25℃, un...
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