Hi Bob, The OCXO is one of those 26-MHz ebay Pletronics from a couple years back. I would like to not degrade its close-in phase noise (quoted as -100 dBc @ 10 Hz, -130 dBc @ 100 Hz). Thinking about Said's suggestion to phase lock a higher-frequency sampling clock to this, with a loop BW somewhere in the 10-100 Hz range.
I have seen a resistive divider used in a similar application, but wondered if I could save the couple dozen mA they were spending. Mark On Tue, 30 Sep 2014 20:18:56 -0400 Bob Camp <kb...@n1k.org> wrote: > Hi > > How quiet does it need to be? > > Put another way - how good is the OCXO? > > What frequency are we talking about? > > What is the phase noise “need” after you get to 3.3V (is there a > system spec)? > > Bob > > On Sep 30, 2014, at 5:46 PM, Mark Haun <hau...@keteu.org> wrote: > > > Is there a "best" way to do this without adding phase noise? For > > example, a 5V OCXO into an ADF4002, or a 3.3V or even 1.8V logic > > input. Is a resistive divider the way to go? > > > > Mark > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow > > the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow > the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.