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transient noise & NOISE Analysis (Read 2299 times)

paulcktang New Member Offline Posts: 6	transient noise & NOISE Analysis Jul 17^th, 2007, 5:42pm Can anyone tell me what's the difference of transient noise simulation and NOISE analysis in Cadence? If I wan to measure the jitter of a oscillator, can I use transient noise to get this approximation? Thanks a lot!
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Geoffrey_Coram

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Posts: 1999
Massachusetts, USA

Re: transient noise & NOISE Analysis
Reply #1 - Jul 19^th, 2007, 4:57am

Cadence has a nice white paper on transient noise analysis, if you have access to SourceLink. They inject random noise into a transient analysis, so it's what you want for jitter.

Standard spice small-signal ac noise analysis is based on linearizing a dc operating poitn and thus doesn't comprehend the time-varying nature of your circuit.

If at first you do succeed, STOP, raise your standards, and stop wasting your time.

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Marq Kole Senior Member Offline Hmmm. That's weird... Posts: 122 Eindhoven, The Netherlands	Re: transient noise & NOISE Analysis Reply #2 - Jul 26^th, 2007, 8:11am For measuring jitter transient noise can be used, but it will be very slow because the size of time-steps will have to be in the order of the bandwidth limitation of the transient noise source. For an oscillator a periodic noise analysis might be more suitable...
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