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Re: Noisy A-131 VCA >> opamps

2004-02-05 by Tim Stinchcombe

Now you guys have got *me* all confused:

> > Dont the 130/131s use the PA382?  Mine do, but i dont know what 
date they
> > were made.
> > 
> > My 132s certainly use the CA3280.
> The PA382 is the Curtis Chip. Dough Curtis renamed the CA3381/3382 
to 
> PA381/382. don't ask me why.

Julian, does your A-132 _really_ use the CA3280, as opposed to the 
CA3080 (the CA3280 is a dual OTA package with linearizing diodes)? 
The PA382/CEM3382 is the exponential flavour, which would seem to 
have no place in a linear VCA!? Just curious to know if there is 
another variant A-132 out there I'm unaware of.

Tim (trying hard not to get all my 2's, 3's and 8's confused)

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