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Product Overview

AS7341 is an 11 channel spectrometer suitable for spectral recognition and color matching applications in mobile devices. Spectral response is defined within the wavelength range of approximately 350nm to 1000nm. Six channels can be processed in parallel by independent ADCs, while other channels are accessed through a multiplexer. Eight optical channels cover the visible spectrum, one channel can be used to measure near-infrared light, and the other channel is a photodiode without a filter ("transparent").

The device also integrates a dedicated channel that can detect ambient light flicker at 50 Hz or 60 Hz. The flicker detection engine can also be used to buffer data when calculating other flicker frequencies externally. The combination of NIR channel and other VIS channels can provide information on the surrounding ambient light conditions (light source detection). The device can also synchronize with external signals through pin GPIO. AS7341 integrates the filter into a standard CMOS silicon wafer through nano optical deposition interference filter technology, and its packaging provides a built-in aperture to control the light entering the sensor array. Control and spectral data access are achieved through a serial I2C interface. The device adopts an ultra-thin packaging with dimensions of 3.1 mm x 2 mm x 1 mm.

Product Features Technical Parameters

• 11 channel optical sensing front-end (350 nm to 1000 nm), FOV: ± 35 °

  
  

• 8 visible channels plus 3 special channels

• Transparent channel

  
  

• On chip ambient light flicker detection (up to 1.5 kHz)

  
  

• Infrared channel

• Response range: 500 to 3500 counts/μ W/cm 2

  
  

• Integral time: T11 ch (typical value)=2 * tint=2 * 50 m=100 ms

• 400 kHz I2C interface

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• GPIO：

• External indium gallium arsenide/silicon photodiode

  
  

• External trigger to start spectral measurement

• Power consumption (typical value): 210 μ A active, 0.7 μ A sleep

  
  

• Supply voltage: 1.8 V

  
  

• Small system size, 3.1 mm x 2 mm x 1 mm (OLGA 8 package)

Product Application

• Light source detection and spectral reconstruction of ambient light

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• Flicker free camera operation and image optimization [AWB (automatic white balance)]

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• Post processing optimization of camera images (CRI measurement)

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• Color matching and skin tone measurement

• Enhanced artificial intelligence: Search and shop by color (e-commerce upgrade)

• Monitor management, printer

GY-AS7341 with level conversion, power supply 2-5V, providing Arduino code. It is recommended to purchase with a certain foundation.

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