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Entry  Fri Aug 23 12:45:08 2019, Shalika Singh, Noise Budget, 2micronLasers, Noise Analysis of Circuit using SR785 Spectrum Analyser and Zero Simulation sallenkeyfilter.pdfbodeplot_sallenkey.pdfNoise_across_SallenKey.pdfsallen.zip
    Reply  Fri Aug 23 14:15:58 2019, Duo, Noise Budget, 2micronLasers, Noise Analysis of Circuit using SR785 Spectrum Analyser and Zero Simulation 
       Reply  Fri Aug 23 17:35:37 2019, Koji, Noise Budget, 2micronLasers, Noise Analysis of Circuit using SR785 Spectrum Analyser and Zero Simulation 
Message ID: 2408     Entry time: Fri Aug 23 14:15:58 2019     In reply to: 2407     Reply to this: 2409
Author: Duo 
Type: Noise Budget 
Category: 2micronLasers 
Subject: Noise Analysis of Circuit using SR785 Spectrum Analyser and Zero Simulation 

I think this is a solid measurement.

Quote:

The circuit has been soldered(refer entries 2399) and the noise for Sallen Key was analyzed

Attachment 1: Circuit Diagram of Sallen Key low pass filter( cut-off= 1Hz)

Attachment 2: Transfer Function of sallen key0

Attachment 3: Noise comparison between zero and SR785 measurements. The noise matches the simulated results to a great extent and also it's less noisy so can successfully be used to bias the photodiodes(1V)

Attachment 4: Zip File

 

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