The circuit is oscillator, so I am dealing with voltage noise not jitter.
I want to get the time domain representation of the noise but the transient noise analysis takes ways too long to simulate. Meanwhile, I get pnoise result very fast even though fmin is very low.
I want to ask how to convert pnoise to time domain process without running actual transient noise analysis. Whether doing ifft on the pnoise spectrum gives the time domain process I am looking for.