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AS7261N - Spectral Sensor

Tri-Stimulus XYZ + NIR Sensor with Electronic Shutter


  • Tri-stimulus XYZ+NIR realized by silicon interference filters
  • Integrated programmable LED drivers
  • I²C slave digital interface with optional interrupt operation
  • 16-bit ADC with digital access
  • 20-pin LGA package 4.5mm x 4.7mm x 2.5mm, with built-in aperture


  • Stable filter conditions over temperature and life time
  • Compact true-color sensing, XYZ coordinates direct from the sensor
  • Direct register read and write with interrupt on sensor ready
  • Signal conditioning on chip
  • Sample illumination without external LED driver

Product parameters

Sensor Type XYZ tri-stimulus/standard observer
Application(s) Color analysis and color calibration
I/O I²C slave digital Interface
Package 20-pin LGA with aperture
Size [mm] 4.5 x 4.7 x 2.5
Supply Voltage [V] 2.7 to 3.6
Temperature Range [°C] -40 to +85

General Description

The AS7261N provides direct XYZ sensor data which conforms to the tri-stimulus standard observer color response of the human eye. A near-IR channel and LED drivers with programmable currents increase application flexibility, including support for electronic shutter applications.The AS7261N 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 an I²C register set.

This product suits for the following applications:

  • Color measurement and absorbance
  • Color matching and identification
  • Precision color tuning/calibration


Title Category Headline Buy
AS726xDemoKit Application Board Demo Kit for AS726x


Name Type Description Language Software AS726xx FW_SW update 12V0.0 spectral sensors English

Technical Documents

Name Type Description Version Language
AS726xN_AN000558_1-00.pdf Application Note AS726xN Design Considerations 1-00 English
AS7261N_BD000389_1-00.png Block Diagram AS7261N Block Diagram 1-00 English
AS7261N_DS000513_2-00.pdf Datasheet Document version 1-02 2-00 English
SpectralSensing_QG000121_1-00.pdf Quick Start Guide miniLiquid Quick Start Guide for Mechanics, Hardware and Software based on ams Color and Spectral Sensors 1-00 English

Spectral Video

Spectral ID iSPI Eval Kit

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