[time-nuts] Low jitter oscillators
SAIDJACK at aol.com
SAIDJACK at aol.com
Mon Aug 16 00:18:08 UTC 2010
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,
charles_steinmetz at lavabit.com 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
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