Frank Wiedmann
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Select tdnoise, Integ Output Noise, Total Noise and Magnitude. Set Start Frequency to 0 and Stop Frequency to f0/2, where f0 is the frequency of your PSS analysis. The result will be the square root of equation (55), which you only have to divide by dv(tc)/dt according to equation (54) in order to obtain the jitter.
Your sweep range in the Pnoise analysis should also be from 0 (or a very low frequency) to f0/2. If you have 1/f noise in your devices, you should probably use a logarithmic sweep where a lower limit of 0 is not possible.
Regarding the timeindex: If you entered a large value for Noise Skip Count, you should have for timeindex the values 0 (which you can ignore) and tc (which you entered in Add Specific Points). In this case, you should of course use timeindex=tc. If you entered 0 for Number of Points, you will only have timeindex=0, which is really timeindex=tc. Any additional points you might have entered will also have a timeindex value that is too low by tc (if tc is the lowest value you entered). This is a bug in SpectreRF that I reported to Cadence some time ago in SR 32827714, it is now handled as PCR 740140.
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