Data Sheet

LifecyclePhase:
Revision : 5
Expired Period: Forever
Release Date:2014-02-17 14:08:50.0
DATASHEET
Ambient Light Sensor
Surface - Mount
ALS-PT19-315C/L177/TR8
6
Copyright © 2012, Everlight All Rights Reserved. Release Date : 12.24.2013. Issue No: DLS-0000039 Rev.5
www.everlight.com
Converting Photocurrent to Voltage
RL
GND
Vout
Vcc
CL
Iph
Light
Source
Note:
1. The output voltage (Vout) is the product of photocurrent (IPH) and loading resistor (RL)
2. A right loading resistor shall be chosen to meet the requirement of maximum ambient light,
and output saturation voltage:
Vout(max.) = IPH(max.) × RL ≦ Vout(saturation)＝Vcc－0.4V
RL × CL ≧ 0.5 (empirical data)