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Nov 30th, 2021, 7:22am
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sampled pnoise sim to multi-phase circuit (Read 57 times)
jyan
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sampled pnoise sim to multi-phase circuit
Oct 17th, 2021, 4:54pm
 
hi all,
I have one question about the sampled pnoise simulation:
If I have a switched capacitor sample and hold circuit to sample the noise of resistor R, and now I add another switch sampler just paralleled with the first switch, with same sampling freq (fs) but nonoverlapping. so, the pss fund. freq = fs, but essentially the switch freq is 2fs.
how can simulate the circuit to get the right noise density (4kTR*pi/2*f3db/fs), instead of 4kTR*pi/2*f3db*2/fs?
thanks
Jeff
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jyan
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Re: sampled pnoise sim to multi-phase circuit
Reply #1 - Oct 18th, 2021, 10:32am
 
I found there is a pnoise option sampleratio can be used here.
sampleratio is the parameter to define a sample rate ratio to fund. freq
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