[sdiy] linearize OTA for VCF?

patchell patchell at silcom.com
Sat Sep 8 20:32:30 CEST 2001


    Ian:

        Most of the filters I have built over the years have used the
linearizing diodes (I use CA3280's).  Me personally, for multimode filters,
prefer this.  I am afraid that this is about as far as the pro's and con's go
for me.  In my latest projects, I have been sometimes laying out the board so
I can hook them up with or without linearizing diodes.


Ian Fritz wrote:

> Hi --
>
> Looking through my vcf schematic collection, I notice that none of the
> designs use the linearizing diodes on the OTA inputs. Does anyone have any
> comments on the pros and cons of using these, and has anyone actually
> incorporated them in a design?
>
> Best regards,
>
>   Ian

--
 -Jim
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