ALS‐GEVB: Ambient Light Sensor (ALS) Shield Evaluation Board
The NOA1305 ambient light sensor (ALS) is designed for handheld applications and integrates a 16‐bit
ADC, a 2‐wire I2C digital interface, internal clock oscillator and a power down mode. The built in
dynamic dark current compensation and precision calibration capability coupled with 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 NOA1305 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. The optical filter used with this chip provides a light response similar to that of the human eye.
Evaluation/Development Tool Information
Product
ALS-GEVB
Status
Active
Compliance
Pb-free
Short Description
Ambient Light Sensor (ALS) Shield Evaluation Board
Parts Used
NOA1305CUTAG , PCA9655EMTTXG
http://www.onsemi.com/PowerSolutions/evalBoard.do?id=ALS‐GEVB 4‐6‐17
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