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PLL Jitter (Read 1140 times)
Mayank
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PLL Jitter
Dec 13th, 2009, 12:30pm
 
Hi all,
         I have obtained a graph of overall PLL phase noise in locked state  which follows Phase-Detector Noise[CPUMP,PFD,Dividers,Reference noise] before PLL BandWidth & follows VCO noise after PLL BandWidth.

Now my questions are,
1.   if I integrate this graph from a low freq(say, 10kHz) to Fosc/2, I get rms Phase Error, right ???
2.   if I multiply this rms phase error by T_osc/(2*pi) , I get a Jitter value.  Is This particular Jitter ---
           a. rms Single-Period Jitter ??
           b. rms Cycle-to-Cycle Jitter ??
           c. Long-Term or Accumulated Jitter ??

Can anyone clarify this please ?

regards,
Mayank.
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