[time-nuts] The Trapezoidal Clocking
Bob Camp
kb8tq at n1k.org
Mon Dec 15 02:45:04 UTC 2014
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 <magnus at 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
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