Document
SMD 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, -40oC to 85oC • 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 • I2C serial port communication: (1) Standard 100kHz, (2).Fast 400kHz • High dynamic sensing range and from 0 to 88,400 Lux • Size: 2.0mm(L)*2.0mm(W)*0.6mm(H) • RoHS compliant and Pb Free
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 wavelength is close to human-eye, and 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
Revi1sion Copy:rig3ht © 2010, Everlight All Rights Reserved. Release Date : 3.5.2012. Issue No: DRLSe-l0e0a00s0e34Date:2012-03-1w6w1w2.:e0v0e:r3li3g.h0t.com
LifecyclePhase:
Expired Period: Forever
DATASHEET SMD I2C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8
Absolute Maximum Ratings (Ta=25 )
Parameter
Storage Temperature Operating Temperature Supply Voltage Digital Output Voltage Digital Output Current ESD Tolerance (Human Body Model) ESD Tolerance (Machine Model)
Symbol
TSTG TOPR VDD VO IO
ESDHBM
ESDMM
Rating
-40 ~ 100 -40 ~ 85 -0.3 ~ 6 -0.3 ~ 6 -10 ~ 10
3500
150
Unit
V V mA V
V
Block Diagram & Pad Descriptions
Figure 1 ALS-PDIC17-79NB/TR8 Functional Block Diagram
Revi2sion Copy:rig3ht © 2010, Everlight All Rights Reserved. Release Date : 3.5.2012. Issue No: DRLSe-l0e0a00s0e34Date:2012-03-1w6w1w2.:e0v0e:r3li3g.h0t.com
LifecyclePhase:
Expired Period: Forever
DATASHEET SMD I2C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8
Pad Description
Pad
VDD GND REXT SDA SCL ADRS
I/O
Power Power Input I/O Input I/P
Function
Supply Voltage Power and signal return Connecting a resistor to GND for adjusting integration time I2C data input/output terminal I2C derail clock input terminal I2C address option pad
Electro-Optical .