Hi,
I have a question with a long history of analysis
You have a driven circuit (say, buffer) and would like to know its phase noise contribution to the system.
Using Spectre, you should use the 'jitter' engine and not the analysis provided for autonomous circuits ('sources'). However, this analysis (as name suggests) returns only jitter, without phase noise information.
Of course, with a single number for jitter it is not possible to recover
the phase noise curve, however, Spectre can return frequency-dependent jitter (in the Jee form).
If we have frequency-dependent jitter (already in Unit-Intervals), wouldn't this be equivalent to phase noise? What would be the correct formula for this jitter-phase noise conversion? Would the shape (and values) be true (e.g. 1/f) ?
I am looking forward to your comments.