[sdiy] Source for CA3280

[patchell]

    The CA3280 has lower input noise, and also lower Iabc feedthrough, at least
when you are using the input diodes (to tell you the truth, I have never used
it without the diodes...).  Also, the CA3280 has a bit more bandwidth as well.

    This does not mean that the LM13700 is not useful.  There are some
aplications that I prefer the LM13700 for.

    I use the CA3280 for making VCF's, VCA's, and Envelope Generators.

    I am using LM13700's for the temp compensating element in some VCO's I am
working on (not the same one as in the AppNote/Paia 9720).

The Proteus wrote:

> I've never done an exhaustive analysis, but how do 3080's and 3280's
> compare to the LM13700 and the (extinct?) LM13600?
>
> Regards,
>
> Prot
>
> - - - T h e  U n d e r g r o u n d  W a r e h o u s e - - -
> - - - Subversive - Tools - For - A - Chaotic - Planet - - -
> -  h t t p : / / w w w . u g w a r e h o u s e . o r g /  -
> --<T h e  P r o t e u s>-<Musician>-<Producer>-<Engineer>--
>
> On Thu, 21 Feb 2002, The Old Crow wrote:
>
> > On Thu, 21 Feb 2002, TooManySynths wrote:
> >
> > > Hi All,
> > >
> > > I was under the impression that 3280s were easy to
> > > get.  Does anyone know where I can find some.
> >
> >   I get them from FAI (Future Active Industrial) Electronics. $3.38ea qty
> > 25, $3.04ea qty 50 or 100, $2.65ea qty 125+.  Note that they are sold in
> > multiples of 25 pieces.  Newark Electonics has them in single quantity,
> > but expect to pay more ($5) each.  Worth it though--my favorite OTA.
> >
> >  You might also ask Jim Patchell if he has any left for sale.
> >
> > Crow
> > /**/
> >
> >

--
 -Jim
------------------------------------------------
* Visit:http://www.silcom.com/~patchell/
*-----------------------------------------------
*I'm sure glad Merry Christmas comes just once a year
* -Yogi Yorgensen
------------------------------------------------