[sdiy] SSM2164 VCA

[cheater cheater]

soon you'll have a whole modular. Nice.

D.

On Mon, Mar 15, 2010 at 11:56, David G. Dixon <dixon at interchange.ubc.ca> wrote:
> Dave,
>
> Disregard my last email package.  I've decided to redesign the circuit.
> Stay tuned.
>
> Cheers,
> Dave
>
> David G. Dixon
> Professor
> Department of Materials Engineering
> University of British Columbia
> 309-6350 Stores Road
> Vancouver, B.C. V6T 1Z4
> Canada
>
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> Fax 1-604-822-3619
>
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>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>> bounces at dropmix.xs4all.nl] On Behalf Of David Ingebretsen
>> Sent: Monday, March 15, 2010 2:16 AM
>> To: 'SDIY DIY'
>> Subject: [sdiy] SSM2164 VCA
>>
>> I just built a VCA, design by Marc Bareille. Very nice, but already I can
>> see I would like to change a couple of things. He based his around a
>> SSM2164
>> and a linearization method in the July 25, 2002 edition of EDN, page 90,
>> http://www.edn.com/contents/images/72502di.pdf
>>
>> This tidbit makes it very easy to make a linear or exponential VCA with
>> very
>> few components.
>>
>> Marc's site:
>>
>> http://m.bareille.free.fr/modular1/quadvca/quadvca.htm
>>
>>
>> I've been looking around at other's VCA designs, but I've yet to see
>> another
>> one based on the 2164; why? The chip isn't dirt cheap, $6.00 at DigiKey
>> for
>> a DIP package but certainly not prohibitive. The wiring seems straight
>> forward enough even for me to deal with. Marc's design is very straight
>> forward, but like I said, I'd like to mix things up a bit.
>>
>> Why don't people use the 2164 for VCAs?
>>
>> David
>>
>>
>>
>> David M. Ingebretsen M.S., M.E.
>> Collision Forensics & Engineering, Inc.
>> 2469 East Fort Union Blvd. STE 114
>> Salt Lake City, UT 84121
>> www.CFandE.com
>>
>> 801 733-5458 Office
>> 801 842-5451 Cell
>>
>> dingebre at CFandE.com
>> dingebre at 3dphysics.net
>>
>>
>>
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