Datasheet say 10K. But reality show you need to minimize the ac noise
impedance by adding a capacitor near AD input and analogic ground.
Value must be set accordingly input signal variation and maximum delay
( Rpot x C ) you must have it.
Vasile

On Thu, 8 Nov 2001, Josh Koffman wrote:

> Sheepish grins abound here, as sent this message I realized I had the
> wrong subject. Here the subject is changed, and the message copied for
> your reading pleasure.
>
> Sorry :)
>
> Josh Koffman
>
> Josh Koffman wrote:
> >
> > Hi all. I know this is going to sound really stupid. I have searched the
> > web, and checked what reference material I have on hand (which is
> > extremely limited right now). I need to read a potentiometer using the
> > ADC on an f877. I figure I should use a voltage divider. However, I
> > can't remember whether the fixed resistor goes to V+ or to ground. Also,
> > can anyone suggest a good value for 10K, 25K, 50K, and 100K
> > potentiometers? I think I'm just not phrasing my search parameters
> > right, but I keep coming up with nothing on the piclist website and
> > epanorama.
> >
> > Help!
> >
> > Josh Koffman
> >
> > --
> > A common mistake that people make when trying to design something
> > completely foolproof is to underestimate the ingenuity of complete
> > fools.
> >         -Douglas Adams
>
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>
>

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