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[Moved]: SNR calcualtion for the filter LTSPICE.

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Chaitanya Varma D

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Hi,
(Please find the data in the pdf file attached).
I am simulating a filter in the LTSPICE. The input to the filter is the quantised and sampled version of the sine wave( i generated the wave from data in the MATLAB by my code and I gave the data set to the filter which is 2nd order butter worth filter). In the LTSPICE I have performed the transient simulation and from that I obtained the FFT plot of the input and the output.

I need to calculate the SNR from the FFT plot. Please let me know if I following the correct procedure.

Please let me know how can I get the SNR.
Thanks in advance.
 

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  • Simulation of LT1677 filter_1.pdf
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