S&H

[Gene Zumchak]

Tom, Paul, others,

    An A/D feeding DAC will work.  You can probably enable the A/D
output constantly into the DAC.  The cheapest DAC is your own R/2R
network and a voltage follower.

Gene Z


Paul Perry wrote:

> At 05:20 PM 11/03/99 -0500, tomg wrote:
> >Does anyone have a good sample and hold. I thought I would try
> >something in the way of pot reduction, but everything I have
> >tried starts to leak sooner or later.
>
> The best sample and hold is an A to D convertor & a memory,
> and then D to A.
> Will wait for say, until the eventual heat death of the universe
> with no droop.
> My challenge to the list: how cheap can you make this?
> Perhaps with a PIC?
>
> paul perry melbourne australia
>
> Hey, it's not THAT silly an idea. It resurfaces in EDN every decade.