AS7221 Datasheet | ams

Description 1 General Description The AS7221 CCT Tuning Smart Lighting Manager device is part of the ams AS722x/1x Smart Lighting Manager/Director family of products that simplify tunable and environmentally responsive lighting designs, enable lights to be “aware” and adapt to their surroundings, and to autonomously serve human-centered lighting and energy conservation needs. The device is equipped with an advanced Cognitive Lighting Engine (CLE) to optimize, chromatic white tuning, daylight harvesting and lumen maintenance via a bination of PWM and/or 0-10 V controls with dimming ballasts. Direct connection to a local I/O network enables connectivity with standard occupancy sensors, dimmers or munications bridges. The AS7221 is designed for use directly in tunable white luminaires, replacement lamps (bulbs) and light-engines/modules, or with a simple lightguide implementation, it can be incorporated directly into an LED driver to enable a highly cost-petitive, high-accuracy warm/cool CCT tuning solution. AS7221 XYZ chromatic white 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 AS72211’s silicon via nano-optic deposited interference filters deliver high-stability over both time and temperature. The Manager’s integrated intelligence enables ams factory CCT calibration, which mitigates chip to chip variation. By bining this factory calibration with a supported luminaire design-level “application matrix”, an end luminaire design can often eliminate the need for light-by-light calibration while delivering lifetime color control. With such a system calibration, accuracies within 2-4 Macadam steps are possible. The LGA package includes a built in aperture to control light entering the sensor array. No additional optics are required. The AS7221 connects to standard 0-10 V dimmers inputs and drives 0-10 V dimming ballasts/drivers to enable a highly...