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Measurements >> Phase Noise and Jitter Measurements >> reference spur
https://designers-guide.org/forum/YaBB.pl?num=1286605751

Message started by raja.cedt on Oct 8^th, 2010, 11:29pm

Title: reference spur
Post by raja.cedt on Oct 8^th, 2010, 11:29pm

hi,
up to my knowledge integral of Phase Noise will give jitter in time domain, but my question should i consider reference spur also in this integration?

Thanks.

Title: Re: reference spur
Post by love_analog on Oct 11^th, 2010, 6:35am

Reference spurs will cause DJ (deterministic jitter).
phase noise = RJ

Title: Re: reference spur
Post by Mayank on Oct 22^nd, 2010, 2:06am

Reference spur will modulate your RJ (obtained from phase noise spectrum w/o ref. spur) at it's own frequency with peak amplitude determined by ref. spur magnitude,
this modulation jitter being known at deterministic jitter, as its origin (ie the origin of ref spur) can be traced back to definite circuit elements/processes.

Total resultant jitter will include both RJ & DJ.

--
Mayank.