General Description
AS7341L1 is a 10-channel spectrometer for spectral identification and color matching for lateral flow
and health related devices. The AS7341L part number enables developers the use ams-related
propriety technology related to the lateral flow principle. The spectral response is defined in the
wavelengths from approximately 350 nm to 1000 nm. 6 channels can be processed in parallel by
independent ADCs while the other channels are accessible via a multiplexer. 8 optical channels cover
the visible spectrum, one channel can be used to measure near infra-red light and one channel is a
photo diode without filter (“clear”). This enables to readout the spectral information of a color strip and
enables multi-analyte detection or fluorescent-based measurement capabilities. The NIR channel in
combination with the other VIS channel may provide additional spectral information. The device can
be synchronized to external signals via pin GPIO.
AS7341L 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 is implemented via 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.
Applications
Multi-analyte detection
Fluorescent-based measurement capabilities
Reflection- or transmissivity-based color detection (e.g. lateral flow strips)