Re: gEDA-user: General ground/power plane design questions

[Dan McMahill <dan@mcmahill.net>]

On Wed, Oct 20, 2004 at 09:07:48AM -0700, Steve Meier wrote:
> First, you should always have a low pass filter which is well bellow 1/2 
> the sampling frequency just before your a/d converter.

Make that "a band limiting filter whose bandwidth is less than
1/2 the sampling frequency".  There is no reason you need to choose this
band to be the 0 to 0.5*Fs range.  A bandpass filter with passband
from 1.1 to 1.4 times the sample rate is fine too.

But of course, in this particular case, it is a low pass filter which 
is called for.

-Dan


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