Hi Would 65 MHz work as well as 64? It certainly would be easier to come up with.
Bob On Feb 9, 2010, at 6:41 PM, Nick Foster wrote: > > Gentlemen, > > Not being an oscillator guru, I thought I'd ask here. I'm building up a > fixed-frequency 64MHz PLL oscillator which uses a 10MHz reference. The > reference is a homebrew HP 10544A-based GPSDO which seems to work OK. I've > built a phase comparator based on a CoolRunner-II CPLD which implements a > flip-flop phase-frequency comparator just like the CMOS 4046. Seems to work > great, although I haven't put it to the test yet with respect to phase noise. > So all I need now is the VCO. > > Right now, all I need is 64MHz to clock a software-defined radio, so I was > thinking about using a VCXO. I see lots of solutions using LC oscillators, > but very few using crystals because overtone crystals can't be pulled very > far at all. So my question is, what type of oscillator would you recommend > for this project, an overtone crystal oscillator like a Butler, or an LC > oscillator? Is there a particular oscillator topology you favor, or (better > yet) a schematic of one you like? > > Thanks, > Nick > > _________________________________________________________________ > Hotmail: Powerful Free email with security by Microsoft. > http://clk.atdmt.com/GBL/go/201469230/direct/01/ > _______________________________________________ > 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.
