Quote:hi,
first convert y axis into linear just bu 10^(L/10) and now this is corresponding to single side band so multiply with 2 to get both side bands. Now integrate so you will get RMS phase error. then divide this number with 2*3.14*f0. Finally you will end up with RMS jitter.
which is the PHASE JITTER / Long Term Jitter.
If you want Period Jitter, then scale with an appripriate weighing function & integrate.
As to what weighing function you wanna use, there have been several metrics from different theoretical physicists lk Demir, Zanchi, etc. which are basically related to sinc function.[FT of a rectangular time window]
About Cadence's analog artist calculator, it provides the values for long term as well as short term period jitter correctly provided you are feeding the correct data.
--M