AS7261 XYZ Chromatic White Color Sensor + NIR with Electronic Shutter and Smart Interface The AS7261is a chromatic white color sensor providing direct General Description XYZ color coordinates consistent with the CIE 1931 2 Standard Observer color coordinates. It also maps the XYZ coordinates to the x, y (Y) of the 2-dimensional color gamut and scales the coordinates to the CIE 1976 uv coordinate system. The device provides accurate Correlated Color Temperature (CCT) measurements and provides color point deviation from the black body curve for white light color in the delta u v coordinate system. It also integrates a Near-IR channel for other applications. LED drivers with programmable currents are provided for electronic shutter applications. The AS7261 integrates Gaussian filters into standard CMOS silicon via Nano-optic deposited interference filter technology and is packaged in an LGA package that provides a built in aperture to control the light entering the sensor array. Control and spectral data access is implemented through either the IC register set, or with a high level AT Spectral Command set via a serial UART. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS7261, XYZ Chromatic White Color Sensor + NIR with Electronic Shutter and Smart Interface are listed below: Figure 1: AS7261 Benefits and Features Benefits Features XYZ xy data (CIE 1931) Calibrated Chromatic white data DUV, uv, uv (CIE 1976) CCT, LUX Simple text-based command interface via UART, or direct register read and write with interrupt UART or IC slave digital Interface on sensor ready option on IC Lifetime-calibrated sensing with minimal drift Filter set realized by silicon interference filters over time or temperature No additional signal conditioning required 16-bit ADC with digital access ams Datasheet Page 1 v1-00 2016-Dec-30 Document FeedbackAS726 1 Gene ral Des c rip t ion Benefits Features Electronic shutter control/synchronization Programmable LED drivers Low voltage operation 2.7V to 3.6V with IC interface 20-pin LGA package 4.5mm x 4.7mm x 2.5mm Small, robust package, with built-in aperture -40C to 85C temperature range Applications The AS7261 applications include: Color measurement and absorbance Color matching and identification Precision color tuning/calibration Block Diagram The functional blocks of this device are shown below: Figure 2: AS7261 Chromatic White Color System 3.3V 10uF 100nF 3.3V VDD1 VDD2 3.3V RX / SCL S uP TX / SDA S LED IND INT LED DRV AS7261 Light XYZ, NIR, MOSI Source MISO Flash C & D SCK Memory Sensors Light in CSN EE Reflective Surface GND Page 2 ams Datasheet Document Feedback v1-00 2016-Dec-30