[time-nuts] An Excellent Tutorial on Precision Clocks
boyscout at gmail.com
Thu Mar 15 01:40:34 EDT 2007
I was just investigating this very issue. It seems that every program
you use to compute these impedances comes up with different answers,
sometimes wildly different. Anyone have a free program they trust
with this sort of thing?
On 3/14/07, Dr Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:
> Tom Clark, K3IO wrote:
> > I just stumbled on an excellent tutorial on low-noise clocks --
> > National Semiconductors free downloadable "Clock Conditioner
> > Owner's Manual". This 88 page document is a 3.7 MB PDF.
> > 73 de Tom, K3IO
> > References
> > 1. http://www.national.com/appinfo/interface/files/clk_conditioner_owners_manual.pdf
> > _______________________________________________
> > time-nuts mailing list
> > time-nuts at febo.com
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> Not bad except they give inaccurate formulae for stripline and
> microstripline characteristic impedance.
> Will these inaccurate formulae ever go away?
> They've been around since the 1970's.
> When with the trace widths and board thickness then in use the accuracy
> wasn't too bad.
> However they are not very useful for modern PCB design.
> time-nuts mailing list
> time-nuts at febo.com
More information about the time-nuts