[sdiy] Sample and Hold

[Elain Klopke]

Thanks all for your quick replies! I'll be adding this awesomeness to
another project.

On Thu, Jun 7, 2018 at 11:51 AM Pete Hartman <pete.hartman at gmail.com> wrote:

> I have the impression that it's pretty widely used.  Very easy, I have a
> project with two of them about ready to hit the usual DIY outlets.  I had
> the impression that the sample input needed to be 5V, so I used an LM78L05
> and a LM339 comparator pulled up with the 5V to do the sampling.
>
> Also: don't measure your voltage directly from the hold cap, you'll drain
> it and wonder why your droop is so terrible.  << voice of experience ;-).
>
> Pete
>
>
> On Thu, Jun 7, 2018 at 11:21 AM, Elain Klopke <functionofform at gmail.com>
> wrote:
>
>> Hey all,
>>
>> In my poking around the internets for sample and hold circuits, I ran
>> across the Texas Instruments LF398 monolithic sample and hold. It looks
>> promising, +/-5 to +/-18V supply range, up to +/-18V input range, TTL and
>> CMOS compatable logic input, all in a DIP8 package.
>>
>> Does anyone have any experience with this chip?
>>
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>>
>
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