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AS7343 Spectral Sensor

14-channel spectral sensor including XYZ


  • 14 optical channels distributed over VIS, including XYZ and one in NIR
  • Including 2 extra channels: Clear and Flicker Detection
  • 6 parallel ADCs for signal processing
  • Ultra-low-profile package 3.1mm x 2mm x 1mm


  • Spectral information & XYZ backwards compatibility enables spectrometer-like object color measurements
  • Highest sensitivity vs. channel-count of the multi-purpose spectral sensing product family
  • Optimized channel count and signal processing for fast measurements
  • Highly compact, cost-effective packaging

Product parameters

Sensor Type Spectral Sensor including XYZ
Applications Multi-purpose sensor
Package OLGA-8
Size [mm] 3.1 x 2 x 1
Supply Voltage [V] 1.8
Temperature Range [°C] -30 to 70°C

General description

The AS7343 is a 14-channel highly versatile, multi-purpose spectral sensor enabling new consumer, commercial, industrial and laboratory applications. It is optimized for reflective, transmissive and emissive measurements including color matching, fluid or reagent analysis or general spectral reconstruction.

The spectral response is defined by individual channels covering approximately 380 nm to 1000 nm with 12+2 channels: 12 in the visible spectrum (VIS) to near-infrared (NIR) range, a clear channel and flicker channel. Applications can be assisted by full spectral reconstruction of light and an integrated flicker detection channel that can automatically flag ambient light flicker at 50/60 Hz as well as buffer data for externally calculating other flicker frequencies. 

AS7343 integrates high-precision optical filters onto standard CMOS silicon via deposited interference filter technology. A built-in aperture controls the light entering the sensor array to increase accuracy. A programmable digital GPIO and LED driver enable light source and trigger/sync control. Device control and spectral data access is implemented through a serial I²C interface. The device is available in an ultra-low profile package with dimensions of 3.1 mm x 2 mm x 1 mm.

This product suits for the following applications:

  • General purpose spectrometer task (spectral reconstruction)
  • Horticulture-based spectral sensing of lighting-needs of plants
  • Spectral smoke detection (signatures of smoke)
  • Color matching and skin tone measurement
  • Laboratory-grade color, liquid or reagent analysis


Title Category Headline Buy
AS7343 Eval Kit Application Board Evaluation Kit for AS7343
AS7343 Reflection Mode Eval Kit Application Board Reflection Mode Evaluation Kit for AS7343


Type Description Language
Evaluation Software Evaluation Software for AS7343 EVK Smoke Detection Demo with technical Documents on Stick EN
Evaluation Software Evaluation Software for AS7343 EVK Reflection Mode - Color + Spectral Measurement EN
Evaluation Software Evaluation Software for AS7343 ALS EVK Light Detection and Color + Spectral Measurement EN
Evaluation Software Evaluation Software for AS7343 ALS EVK Reference Board - Attention - Do not use the individual calibration data's in series without ams request EN

Technical documents

Type Description Language
Datasheet AS7343 Datasheet English
Application Note AS7343 Auto Gain, Optimization and Correction English
Application Note Spectral Sensor Calibration Methods English
Quick Start Guide AS7343/AS7352 SDK English
User Guide AS7343 Evaluation Kit User Manual English

Environmental documents

Type Description Language
RoHS Certificate RoHS Certificate AS7343 English

Other information

Type Description Language
Block Diagram AS7343 Block Diagram English
Block Diagram AS7343 Block Diagram (detailed) English
Image AS734x perspective English
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