General Description
The AS7265x chipset consists of three sensor devices AS72651
with master capability, AS72652 and AS72653. The multispectral
sensors can be used for spectral identification in a range
from visible to NIR. Every of the three sensor devices has 6 independent
on-device optical filters whose spectral response is
defined in a range from 410nm to 940nm with FWHM of 20nm.
The AS72651, combined with the AS72652 (spectral response
from 560nm to 940nm) and the AS72653 (spectral response
from 410nm to 535nm) form an AS7265x 18-channel
multi-spectral sensor chip-set. Using the AS7265x chipset
requires the use of firmware. It must be loaded into a serial flash
via a UART interface. The list of ams tested serial flash memories
can be found in Figure 56. The components AS72651, AS72652
and AS72653 are pre-calibrated with a specific light source. The
information about the conditions of the performed calibration
(for example light source, gain, integration time) can be found
in the table of optical characteristics of the respective component.
Any operation other than these conditions might require
a new calibration in the application.
Each AS7265x device has two integrated LED drivers with
programmable current and can be timed for electronic shutter
applications.
The device family integrates Gaussian filters into standard
CMOS silicon via nano-optic deposited interference filter technology
in LGA packages that also provide built-in apertures to
control the light entering the sensor array.
Applications
The AS7265x applications include:
• Product/Brand authentication
• Anti-counterfeiting
• Portable spectroscopy
• Product safety/adulteration detection
• Horticultural and specialty lighting
• Material analysis