AS7221 Datasheet, PDF (1/36 Pages) ams AG – Calibrated XYZ tri-stimulus color sensing for direct translation to CIE 1931/1976 standard observer color MAPS

General Description
AS7221
Calibrated XYZ Chromatic Manager for
Network Enabled Smart Lighting
The AS7221 Smart Lighting Manager device is part of the ams
Cognitive Lighting™ family of products that enable lights to be
“aware” and adapt to their surroundings, autonomously
adapting to human lighting and energy conservation needs.
The device is equipped with an advanced Cognitive Lighting
Engine (CLE) to optimize, chromatic white/color tuning,
daylight harvesting and lumen maintenance via a combination
of PWM and/or 0-10V controls with dimming ballasts. Direct
connection to a local sensor network (LSN), enables
connectivity with standard occupancy sensors, dimmers or
communications bridges.
AS7221 XYZ chromatic white/color sensing provides mapping
to x, y (z) of the CIE 1931 2-dimensional color gamut coordinates
and scales the coordinates to the CIE 1976 u’v’ coordinate
system. The AS7221 integrates standard observer filters into
standard silicon via nano-optic deposited interference filters
which deliver high-stability over time and temperature. The
LGA package includes a built in aperture to control light
entering the sensor array. Integrated intelligence enables
lifetime CCT calibration to within 2-4 Macadam steps.
The AS7221 connects to standard 0-10V dimmers inputs and
drives 0-10V dimming ballasts/drivers to enable a highly
cost-effective white tunable current-steering luminaire design
with a single-channel constant current ballast. Direct PWM
inputs can also interface to standard LED drivers or
multi-channel ballasts for constant voltage LED lighting
architectures.
A UART interface is provided for configuration, control and
management of the CLE. This UART interface responds to simple
Smart Lighting Set commands.
Ordering Information and Content Guide appear at end of
datasheet.
ams Datasheet
[v1-01] 2016-Dec-08
Page 1
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