BH1772GLC Datasheet PDF - ROHM Semiconductor
| Part Number | BH1772GLC | |
| Description | 1 Chip Optical Proximity Sensor + Ambient Light Sensor IC | |
| Manufacturers | ROHM Semiconductor | |
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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
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/30
2011.06 - Rev.B
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BH1772GLC
●Reference Data
1.2
1.0
0.8
0.6
0.4
0.2
0.0
400 500 600 700 800 900 1000 1100
Wavelength [ nm ]
Fig.1 ALS Spectral Response
64
56
48
40
32
24
16
8
0
0 8 16 24 32 40 48 56 64
Illuminance [ lx ]
Fig.2 Illuminance -
ALS Measurement Result
Technical note
100000
10000
1000
100
10
1
1 10 100 1000 10000 100000
Illuminance [ lx ]
Fig.3 Illuminance -
ALS Measurement Result 2
1.2
1
1pin
0.8 - +
0.6
0.4
-+
0.2
0
-90 -60 -30 0 30 60 90
Angle [ deg ]
Fig.4 ALS Directional Characteristics 1
1.2
1
0.8
0.6
0.4
0.2
0
-40 -20 0 20 40 60 80 100
Ta [ ℃ ]
Fig.7 ALS Measurement Accuracy
Temperature Dependency
1.2
1
0.8
0.6
0.4
0.2
0
2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8
VCC [ V ]
Fig.10 ALS Measurement Result
VCC Dependency
1.2
1
0.8
-
0.6 - 1pin
0.4
+
0.2
+
0
-90 -60 -30 0 30 60 90
Angle [ deg ]
Fig.5 ALS Directional Characteristics 2
Fluorescent
Light
Incandescent
Light
Halogen Light
Kripton Light
Artifical Sun
Light
White LED
0
0.5 1 1.5
Ratio
2
Fig.8 ALS Light Source Dependency
( Fluorescent Light is set to '1' )
1.20
1.00
0.80
0.60
0.40
0.20
0.00
400 500 600 700 800 900 1000 1100
Wavelength [nm]
Fig.11 PS Spectral Response
10
8
蛍光灯白熱灯感度比
6
4
2
0
-40 -20 0 20 40 60 80 100
Ta [ ℃ ]
Fig.6 ALS Dark Response
200
150
100
50
0
2 2.5 3 3.5 4
VCC [ V ]
Fig.9 VCC - ICC
( During ALS measurement )
1.2
1
1pin
0.8 - +
0.6
0.4 - +
0.2
0
-90 -60 -30
0
30 60 90
Angle [ deg ]
Fig.12 PS Directional Characteristics 1
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
5/30
2011.06 - Rev.B
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BH1772GLC electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BH1772GLC.PDF Datasheet ] | |
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