NOA1312

NOA1312 Product Preview High-Precision Ambient Light Sensor with Three I2C Slave Addresses, EEPROM and Dark Current Compensation 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. The device can support simple count equals lux readings in interrupt−driven or polling modes. The NOA1312 employs proprietary CMOS image sensing technology from ON Semiconductor to provide large signal to noise ratio (SNR) and wide dynamic range (DR) over the entire operating temperature range. 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 mA Active Power Consumption in Normal Operation Ultra−low Quiescent Power Dissipation, less than 100 nA in Power Down Mode (b...