On Friday 31 October 2008 20:22:59 Joerg wrote:
> >> Might want to rotate C11 and squeeze it in between R18/C12 so it's
> >> closer to pin 4. But that really only matters if you expect lot of
> >> RF from cell phones and stuff.
> >
> > Nope. It's inside a metal box with all the circuit breakers.
>
> That makes it pretty safe. But I did have a situation at a client where
> this wasn't enough. Cell phone noise made it in via the cables. GSM
> phones and BlackBerries were the worst for some reason. We fixed it by
> switching to a device with clean CMOS inputs instead of BJT and
> providing a nice little 0603 cap smack dab across the diff input, as
> close as design rules would let us.
>
Feed-through caps any potential use here?
Peter
--
Peter Brett
Electronic Systems Engineer
Integral Informatics Ltd
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