Hi If you treat it as a sine, you certainly get further. There are some neat sine wave input chips. The next layer to the problem is that the trapezoid may be slower than (or faster than ) a sine wave depending on just what’s going on with the system. That will make it a bit difficult to know what sort of a clock you have at each tap.
Bob > On Dec 14, 2014, at 10:40 PM, Magnus Danielson <mag...@rubidium.dyndns.org> > wrote: > > Hi, > > Agree. It's not ideal. In it's simplicity it achieves first degree delay > compensation, but it is not the best of signals you get. > > You need to treat the signal as being essentially a sine, and overcome the > slew-rate. > > It may be a useful technique besides it's limits. > > Cheers, > Magnus > > On 12/15/2014 03:45 AM, Bob Camp wrote: >> Hi >> >> >> …. but … >> >> >> Low edge speeds => poor signal to noise => high jitter. >> >> The result is a clock that aligns, but has high(er) jitter compared to a >> conventional square wave clock. Most of the “lower phase noise / lower >> jitter” progress in CMOS logic has gone hand in hand with faster edge rates. >> >> Bob >> >> >>> On Dec 14, 2014, at 8:27 PM, Magnus Danielson <mag...@rubidium.dyndns.org> >>> wrote: >>> >>> Bob, >>> >>> On 12/14/2014 02:10 AM, Robert Darby wrote: >>>> This is an paper that may be of some interest to those interested in >>>> clock distribution. The author, Jinyuan Wu has done considerable work >>>> on FPGA TIC's with Fermi Lab. >>>> >>>> http://www-ppd.fnal.gov/EEDOffice-w/Projects/ckm/comadc/TrapezCLK1b.pdf >>> >>> How incredibly cunning! >>> >>> Cheers, >>> Magnus >>> _______________________________________________ >>> 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. _______________________________________________ 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.