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  1. #1
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    delta sigma modulator verilog code

    Hi guys,

    I have a serious problem.

    I have verilog code for a third order delta sigma modulator but donot have its simulink model.

    How can I get the frequency domain characteristics of the modulator such as the STF,NTF and output spectrum? Verilog has only transient result.

    Many thanks!

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  2. #2
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    3rd order sigma delta verilog code

    have u tried using the delta sigma toolbox for matlab:

    http://www.mathworks.com/matlabcentr...bjectType=file

    and also, do u mind sharing the verilog code? it might be useful to some of us.



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  3. #3
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    sigma delta modulator matlab

    Quote Originally Posted by eejli
    Hi guys,

    I have a serious problem.

    I have verilog code for a third order delta sigma modulator but donot have its simulink model.

    How can I get the frequency domain characteristics of the modulator such as the STF,NTF and output spectrum? Verilog has only transient result.

    Many thanks!
    knowing the transient output and the modulator structure is enough to transfer result in the time domain into the frequency domain



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  4. #4
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    delta sigma code

    Dear eejli,
    Can you share verilog code for a third order delta sigma modulator to me?

    I have building third order delta sigma model in verilog,but,I aways to encounter in verilog code .

    thank you very much.



  5. #5
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    sigma delta modulator site:edaboard.com

    See sth about FFT. Just do a FFT to the transient results, you will get the spectrum.

    Added after 1 minutes:

    See sth about FFT and window function. Just do a FFT to the transient results, you will get the spectrum.



  6. #6
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    sigma delta+matlab

    are you guys talking about Verilog code for the digital part of sigma delta converter? Isn't a modulator analog block?
    Can anyone explain me a bit?

    Thank you.



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  7. #7
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    sigma delta modulator

    I think eejli talking about a digital delta-sigma modulator. It may be used in a fractinal-N frequency synthesizer or a DA converter.



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