ALS-PDIC17-79NB-TR8 Datasheet, PDF (1/21 Pages) Everlight Electronics Co., Ltd – I2 Digital Ambient Light Sensor

Surface - Mount
I²C Digital Ambient Light Sensor
ALS-PDIC17-79NB/TR8
Features
‧Close to the human eye's response
‧15 bit effective resolution
‧50Hz/60Hz rejection
‧Low sensitivity variation across various light sources
‧Operating temperature performance, -40^oC to 85^oC
‧Wide supply voltage range, 2.7V to 5.5V
• Low power consumption, less than 2mW while operating
• Shut-down mode, current consumption less than 0.1uA
2
• I C serial port communication: (1) Standard 100kHz, (2).Fast 400kHz
‧High dynamic sensing range and from 0 to 220000 Lux
‧Size : 2.0mm(L)*2mm(W)*0.6mm(H)
‧RoHS compliant and Pb Free package
Description
The ALS-PDIC17-79NB/TR8 is a digital-output light sensor with a two-wire, I²C serial interface that is
compatible with SMBus when working at 100kHz serial clock frequency. It combines a photodiode and an
analog-to-digital converter (ADC) on a single CMOS integrated circuit to provide light measurements over an
effective 15-bit dynamic range. Two operation modes are provided with one for constantly refreshing ADC and
the other for one time integration. When working in “one time integration” mode, no external resister is
required. The integrating conversion technique used by ALS-PDIC17-79NB/TR8 effectively eliminates the
effect of flicker from AC-powered lamps, increasing the stability of the measurement. ALS-PDIC17-79NB/TR8
is very close to human-eye vision, having very low response to non-visible light, such as infrared and
ultra-violet light.
Applications
• Detection of ambient light for controlling the backlighting of TFT LCD display
• Automatic residential and commercial lighting management
• Automatic contrast enhancement for electronic signboard
• Ambient light monitoring device for daylight and artificial light
Everlight Electronics Co., Ltd.
Document No: DLS-xxxxxxx Rev1
1
http://www.everlight.com
Oct. 12, 2010