Analogue like signal interaction within cpld possible ????

Jim,

I am using two XC95108 which are completely oversized for that task simply
because I have two of them on my breadboard. Each of them features the
programmable predivider (not in use) and the quadrature circuitry made from
two d-flipflops. The outputs lead to an external  74AHC1G86. The
fluctuations ( I don't like to call them jitter because they are not
stochastic) have dropped from +/-450 ps to abt. +/-50 ps.

Regards
Ulrich

"Jim Granville" <no.spam@designtools.maps.co.nz> schrieb im Newsbeitrag
news:4689f747$1@clear.net.nz...
> Ulrich Bangert wrote:
>
> > Gents,
> >
> > this is to let you know that departing the two clock signals into two
> > separate cplds and xoring them with external single-gate-logic has
improved
> > the situation a lot.
>
> Good to hear that :)
>
> Can you quantify "improved the situation a lot", so readers can know
> what the relative jitter levels are ?
>
> Which/how many single gate devices did you use ? & which CPLDs ?
>
>
>
> -jg
>
>
>
>