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Nov 29th, 2020, 7:40am
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Is there a way to get pnoise with sub-sampled jitter (Read 268 times)
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Silicon Valley
Is there a way to get pnoise with sub-sampled jitter
May 05th, 2020, 11:35pm
I have a fclk signal, and I simulated the pnoise based on threshold crossings (Edge phase noise in Spectre RF).
I want to see the effect of foldback after an ideal divider (divide by 2). In order to do that, instead of having a divider in the bench, I was thinking if I could just sub-sample the sampled jitter that was obtained based on threshold crossings and then plot the pnoise for that sub-sampled jitter (that would correspond to a fclk/2 clk). Is there a way to do that in Spectre RF?
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Andrew Beckett
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Re: Is there a way to get pnoise with sub-sampled jitter
Reply #1 - May 12th, 2020, 12:09am
You could just set the PSS fundamental to fclk/2 - then the sampler in the sampled pnoise analysis will be operating at fclk/2 (assuming I've understood what you're asking).

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