On Tue, Dec 14, 2004 at 10:32:27PM -0500, Dan McMahill wrote: > > On Tue, Dec 14, 2004 at 09:21:28AM -0500, Dan McMahill wrote: > > I'd say it depends on your definition of "modern electronics". It seems > like in your case you specifically mean high speed digital lines.
Well, yes... That's what keeps the paychecks coming... > There are plenty of other cases of interest. A very low noise analog > line which needs to be high impedance for some reason or another. > Capacitive gauge read electronics for example. I've also seen cases > where coupling to a plane and bypassing a filter hurt ultimate rejection. > > So while I agree that with high speed digital lines, total capacitance is > not what you want, there are other circuits still around! This is where I can see how it matters, that's why I started out asking why he needed to know the information about the total trace capacitance :-) -- Daniel Nilsson
