AS7220-BLGM

AS7220 Calibrated CCT and Lumen Maintenance Smart Lighting Manager The AS7220 Smart Lighting Manager is part of the ams General Description Cognitive Lighting family of products that enable lights to autonomously adapt to human lighting and energy conservation needs. The device is equipped with an advanced Cognitive Lighting Engine (CLE) to optimize CCT and lumen maintenance and color maintenance via a combination of PWM and/or 0-10V controls with dimming ballasts. Daylight harvesting can also be performed by adding an IC connected ams ambient light sensor. AS7220 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 uv coordinate system. The AS7220 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 AS7220 connects to standard 0-10V dimmer 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. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet Page 1 v1-00 2017-Feb-16 Document FeedbackAS722 0 Gene ral Des c rip t ion Key Benefits & Features The benefits and features of this device are listed below: Figure 1: Added Value of Using AS7220 Benefits Features Calibrated XYZ tri-stimulus color sensing for direct Accurate maintenance of CCT and daylight translation to CIE 1931/1976 standard observer color responsive lighting maps Lifetime-calibrated sensing with minimal drift Filter set realized by silicon interference filters over time or temperature If enabled, desired CCT and/or Lumen settings are Optional user/manufacturer configurable CCT read by the Cognitive Light Engine and maintained maintenance and/or Lumen maintenance by using spectrally tuned light Compatible with standard dimmer controls and Directly interfaces to 0-10V dimmer controls and occupancy sensors standard occupancy sensors Built-in PWM generators to dim and control Directly interfaces to LED string circuity via warm/cool luminaire LED strings PWM outputs 12-bit resolution for precise control down to 1% 0-10V analog output for control of conventional Directly interfaces to ballast via 0-10V dimming ballasts in a current steering design 20-pin LGA package 4.5mm x 4.7mm x 2.5mm with Small package, wide operating range with integrated aperture critical optics built-in -40 C to 85C Applications Autonomous, solid-state lighting manager for precision fixed CCT and daylight harvesting: Configurable CCT and/or lumen maintenance applications Luminaires intended to meet California Title 24 daylighting requirements Page 2 ams Datasheet Document Feedback v1-00 2017-Feb-16