[time-nuts] Interfacing a 8dBm sine output of an OCXO to adigital logic standard

David Kirkby david.kirkby at onetel.net
Fri Sep 16 12:19:48 EDT 2005

Poul-Henning Kamp wrote:
> In message <MGEKKFGEAIKJOOPJPGIKCEAMFMAA.richard at karlquist.com>, "Richard \(Ric
> k\) Karlquist \(N6RK\)" writes:
>>>	http://www.icst.com/datasheets/ics2305.pdf
>>>ICS has many interesting clock chips which can be used for other
>>>uses than what they were designed.  Worth a browse.
>>>Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
>>This chip has 200 ps of jitter!  There is no way you would
>>want to use this with an OCXO.
> Be aware they don't mean the same with "jitter" as you do: they
> include production tolerances, so the 200ps is the worst case jitter
> measured between two output pins on a large lot of chips, not the
> jitter you would measure on a single output on a single chip.

What you are describing sounds more like the 700ps "Device to Device Skew".

David Kirkby,

Please check out http://www.g8wrb.org/
of if you live in Essex http://www.southminster-branch-line.org.uk/

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