Elie,
I believe they are both. Pin1 is the exponential input and pin 2 is the
linear input. There's a block diagram in the Yamaha IC Guide book on page
32 here:
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http://tinyurl.com/862alwh∗∗
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∗----Jim
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On Tue, Nov 15, 2011 at 10:16 PM, elie <elieman@...> wrote:
> ∗∗
>
>
> Hi, I'm implementing a CS-80 Ring Modulator design on another Yamaha
> Synth. No problem getting the Modulator & buffer amps, VCO chip but the VCA
> (IG00151)and Envelope Generator (IG00159) are not practical to purchase.
>
> My question is if the VCA and Envelope Generator are Linear or Exponential
> in function?...not sure if the service manual might answer that so just in
> case anyone knows?
>
> Thanks!
> Elie
>
>
>
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