Hello, I would like to characterize the impact of jitter on the pulse width (td) of the out signal shown below. I would like to understand how phase noise impacts/modulates the pulse width td, and which block is the major noise contributor. I am using Spectre 17.1.0.270, and the new version of Pnoise provides a new feature called "edge delay". So I set it up as it triggers at rising edge of out, and measure at the falling edge of out, such as pnoise pnoise start=10k stop=1G maxsideband=30 noisetype=sampled \ measurement=[pm0] annotate=status pm0 jitterevent measure=delay trigger=[out GNDA] triggerthresh=0.5 \ triggernum=1 triggerdir=rise target=[out GNDA] targetthresh=0.5 \ targetnum=1 targetdir=fall Am I using this feature in the right way? Is it intended to do stuff like this? I am expect to see very little noise contributed from buf0, but in reality , it dominates my noise budget. Any help or explanation will be highly appreciated.![]()
↧