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Recent content by VitaMT

  1. V

    Sigma delta modulator simulink model troubleshooting

    SNR will be positive if you will not consider DC point. In my design I use calcSNR from SDToolbox: [snr,ptot]=calcSNR(yy1(1:N),f,3,fB,w,N); instead of [snr,ptot]=calcSNR(yy1(1:N),f,1,fB,w,N); And in all demos from SDToolbox output of the modulator is bipolar.
  2. V

    How to simulate sigma-delta modulator by simulink tools?

    Can anybody upload here SIMSIDES?
  3. V

    Matlab files of the book, Data Converters, by Franco

    Re: Matlab files of the book, Data Converters Hi, barry0107. Attached are the Matlab files from this book. Enjoy ;-)
  4. V

    SDtoolboxs in simulink

    Hello, hazem tarek. In MATLAB: File -> Set Path... -> Add with Subfolders... Then choose your folder with "SDToolbox" and press OK :-)
  5. V

    Troubles in Matlab Simulation of Multibit CTDSM

    Hi All, I'm simulating 1-st order continious time delta-sigma modulator with 2-bit quantizer, but i found out its SNR is only 1 dB better than the 1-bit quantizer: 1-bit SNR=70.3dB @ OSR=256; 2-bit SNR=71.3dB @ OSR=256; 3-bit SNR=80.1dB @ OSR=256. What's wrong with it? I use 'calcSNR'...
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