[sdiy] Choosing an OTA for VCA

[patchell]

    Yes, the CA3280 is "conditionally" worth it.  It has many
characteristics that make it a better choice for many applications,
however, not all.  I also like the LM13700 for some things, because you
just don't need something as good as the CA3200, and like you pointed
out, it is rather expensive.  Last time I purchased a lot (250 pieces), I
think I paid something like $2.80 each...I was selling them for this
price to list members, although, my inventory is getting low...

    The SSM2164 is good for VCA's, although, it lacks some of the
flexability of the LM13700 and CA3280.

Scott Juskiw wrote:

> I've just spent a few hours going through the archives and getting
> edu-ma-cated on OTAs. Thanks for all the great posts. But now I have
> to choose an OTA. My needs are mostly VCA based (adding voltage
> control to everything). The CA3280 seems to be the most popular
> device , but they're going for $4 a pop at Active. I don't mind
> buying a case lot of them to last a lifetime, but the LM13700 is only
> 68 cents at Mouser. Is the CA3280 really worth it?
>
> On a similar topic, the SSM2164 looks like another good VCA choice.
> But I can't seem to find them anywhere. Is it best to avoid the SSM
> stuff and stick with OTAs?

--
 -Jim
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