Hi The bandwidths chosen generally have roots in a telcom spec. Infinite bandwidth generally equates to infinite jitter. You have to restrict it somehow.
Bob On Aug 15, 2010, at 8:18 PM, [email protected] wrote: > Hi Attila, > > note that manufacturers are kind of cheating when they say things like > "0.2ps rms jitter" - see the N.S. appnotes below for example. > > This is mostly calculated from phase noise, with typical bandwidth limits > of 20Hz to 20MHz or less. > > So what happens below 20Hz or above 20MHz offset is usually ignored in this > number by filtering it out.. > > bye, > Said > > > In a message dated 8/15/2010 13:38:24 Pacific Daylight Time, > [email protected] writes: > > Attila wrote: > >> Does anyone have any pointers to recommended reading on the design of such >> low jitter oscillators? > > As Bruce noted, low jitter oscillators are available from any number > of sources. If you want to try rolling your own, here are a few > sources to start you off: > > http://contentdm.lib.byu.edu/ETD/image/etd369.pdf > > http://link.aip.org/link/?ELLEAK/34/2024/1 > > http://www.national.com/vcm/NSC_Content/Files/en_US/Timing/LMK04000_ProdBrie > f.pdf > > http://www.national.com/an/AN/AN-1939.pdf > > http://www.national.com/an/AN/AN-1910.pdf > > I'm sure others will have many more suggestions. > > Best regards, > > Charles > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
