Description
The NOA1312 high−precision ambient light sensor (ALS) is designed for very high accuracy (better than ±5% tolerance) handheld applications. The device integrates a 16−bit ADC, a 2−wire I2C digital interface with three pin−selectable I2C slave addresses, internal clock oscillator, EEPROM and a power down mode. A photopic optical color filter together with built in dynamic dark current compensation and precision calibration capability plus excellent IR and 50/60 Hz flicker rejection enables highly accurate measurements from very low light levels to full sunlight. 

FEATUREs
• Senses Ambient Light and Provides an Output Count Proportional to
   the Ambient Light Intensity
• Human Eye Spectral Response using Photopic Optical Filter
• Dynamic Dark Current Compensation
• Very High Accuracy (better than ±5% tolerance)
• Ev Sensitivity of 5.2 Counts/lux
• Three I2C Slave Addresses (0x29, 0x39 and 0x49), Pin Selectable
• Less than 240 μA Active Power Consumption in Normal Operation
• Ultra−low Quiescent Power Dissipation, less than 100 nA in Power
   Down Mode (below 50°C)
• Interrupt Signal Notifies Host of Significant Intensity Changes
• Internal EEPROM Stores Values to Minimize Programming Time
• Register Values Preserved during Power−down Mode
• Wide Operating Voltage Range (2.4 V to 3.6 V)
• Wide Operating Temperature Range (−40°C to 85°C)
• Linear Response over the Full Operating Range
• Senses Intensity of Ambient Light from 0.096 lux to Full Sunlight
• Programmable Integration Times
• No External Components Required
• Built−in 16−bit ADC
• I2C Serial Communication Port Supports Standard and Fast Modes
• This Device is Pb−Free, Halogen Free/BFR Free, and RoHS
   Compliant

APPLICATIONs
• Saves Display Power in Applications such as:
   − Tablets, LED Backlit Displays,
      Smart Phones, Netbooks, PDAs,
      MP3 Players, GPS
   − Video Recorders