Don't leave us in suspense :-) What method did you decide to use? Joe Gray W5JG
On Mon, Jan 7, 2013 at 8:54 PM, Tom Van Baak <[email protected]> wrote: > A week ago I asked about a 10 MHz to 16 MHz multiplier. Thanks very much for > the suggestions and interesting discussion. > >> What's the simplest way to generate 16 MHz from 10 MHz? This >> will be for clocking a microcontroller at 16 MHz given 10 MHz >> (Cs/Rb/GPSDO). Low price and low parts count is a goal; jitter >> is not a concern but absolute long-term phase coherence is a must. >> >> The ICS525 (as in TAPR Clock-Block) is a good candidate but I >> was wondering if there's something cheaper, less functional, and >> maybe not SSOP. Any suggestions? >> >> Thanks, >> /tvb > > A few of you wanted to know more background. Some portable > microcontroller-based timer/counters use a 16 MHz xtal timebase. To > transparently give them "atomic" accuracy I thought it would be a cute hack > to simply feed them 16 MHz as derived from a good 10 MHz (which we all have). > For a quick test I used a house 10 MHz referenced DS345 to produce the 16 MHz > square wave. I know some DDS have round-off error but the DS345, at least at > this frequency, maintained phase to the nanosecond. > > Not wanting to tie up my DS345 indefinitely, I wondered for this fixed 10:16 > (5:8) frequency ratio if there was cheap, simple, or clever solution. The > TAPR Clock-Block came to mind. The ICS525 chip it uses is cheap (under $5) > and trivial to configure so that was clearly one solution. But I was curious > what the group would propose. > > Anyway, thanks to all who contributed. If there are any stones left unturned, > send me email off-line. > > /tvb > _______________________________________________ > 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.
