[sdiy] Linearising VCAs - Mike Sims' EDN article

[megaohm]

 Mike Simm's 13700 circuit is an excellent alternative to a CA3280
(well...half of of 3280). I have built a bunch of VCA's using that
basic circuit. The CV feedthrough performance is nearly as good, too.
I have no experience with BA's, but they're discontinued, too. Brings
tears to my eyes. We need more OTA's not less!


p.
http://www.sdiy.org/peng/






On Nov 18, 2007 7:50 AM, Robin Whittle <rw at firstpr.com.au> wrote:
> I have not read the extensive discussion in recent months about
> VCAs, so perhaps some of this has already been mentioned.
>
> I read in Tony Allgood's doco:
>
>   http://www.oakleysound.com/vca2-doc.pdf
>
> of a linearisation technique for an LM13600 dual VCA.  This lead me
> to the article by Mike Sims, of Lectrosonics, in EDN 19 January 1995:
>
>   http://www.edn.com/archives/1995/011995/02di1.htm
>
> Also of potential interest:
>
> http://www.datasheetcatalog.com/datasheets_pdf/B/A/6/1/BA6110.shtml
>
>   The BA6110 datasheet.  I couldn't find a BA662 datasheet.
>
> http://www.ladyada.net/forums/viewtopic.php?t=1107
> http://i39.photobucket.com/albums/e178/bonespercival/ba662to6110.jpg
>
>   Using a BA6110 in place of a BA662.
>
>
>    - Robin        http://www.firstpr.com.au/rwi/dfish/
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>