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

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Sep 16 11:19:33 EDT 2005

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.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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