AMS AG announces the AS7225 tunable-white lighting smart system sensor, further broadening the solution set for sensor-integrated tunable-white lighting solutions. With the addition of the AS7225, OEM lighting manufacturers can access ams’ closed-loop CCT tuning and daylight compensation, while retaining the existing host microprocessor architecture in their smart lighting design. The result is higher precision, more flexible LED binning, and lower system costs for tunable white lighting systems.
The AS7225 is equipped with the product family’s industry-first embedded tri-stimulus CIE XYZ color sensor to enable precise color sensing with direct mapping to the International Commission on Illumination (CIE) 1931 color space which is recognized as the standard coordinate definition for human color perception. CCT and daylighting tuning directives are communicated to the host microprocessor via an industry-standard I2C interface, allowing IoT smart lighting manufacturers to avoid costly calibration and tuning algorithm development and reduce time to deployment.The AS7225 is an extension of ams’ Cognitive Lighting™ smart lighting manager family. The effi-cient AS7225 is available in a 4.5 x 4.7mm LGA package, for flexible integration into luminaires, light-engines and larger replacement lamps, such as LED linear T-LED products. The device pro-vides precise CCT tuning direction between configured warm and cool white LED strings within a luminaire. In addition to the CCT- tuning functions, the AS7225 can additionally be used looking outward in luminaire designs to provide precise daylight management, or can deliver combined CCT-tuning and daylighting directives by the addition of ams’ TSL4531 ambient light sensor.
