By ams 31
The ams AS7341 is an 11-channel spectrometer for spectral identification and color matching applications used in mobile devices. The spectral response is defined in the wavelengths from approximately 350 nm to 1000 nm. Six channels can be processed in parallel by independent ADCs while the other channels are accessible via a multiplexer. Eight optical channels cover the visible spectrum, one channel can be used to measure near-infrared light and one channel is a photodiode without filter ("clear").
The device also integrates a dedicated channel to detect 50 Hz or 60 Hz ambient light flicker. The flicker detection engine can also buffer data for calculating other flicker frequencies externally. The NIR channel in combination with the other VIS channel may provide information of surrounding ambient light conditions (light source detection). The device can also be synchronized to external signals via pin GPIO. AS7341 integrates filters into standard CMOS silicon via nano-optic deposited interference filter technology, and its package provides a built-in aperture to control the light entering the sensor array. Control and spectral data access are implemented through a serial I2C interface. The device is available in an ultra-low-profile package with dimensions of 3.1 mm x 2 mm x 1 mm.