S&H

[tomg]

>     In my last reply which I haven't seen posted, I suggested:
>     One classic S/H uses two op amps

I tried all the usual things. The best I could come up with was a 3080
, s&h cap and  fet follower in the loop. Worked pretty good, but still 
leaks (just a tiny bit), however it won't do for something like vco freq.

I need something like Paul P. describes as "Will wait for say, until 
the eventual heat death of the universe with no droop." ...:-)

>  I have since looked in JAMECO and found the LF398 at 1.59 for one
> 1.49 if you buy ten.  This is really worth trying.  Let us know how it
> works.
> 
> Gene Z

I'ts worth a try. Anything to keep from running a clock all over my
analog stuff.  I'll get a couple and check it out..Thanks Gene.

Anybody ever try the LM3900 ramp & hold scheme?

-tg