[sdiy] Careful with the CEM3320s [was: Re: Yamaha CSY-2 solo synthesizer]

[cheater cheater]

so in fact they're op amps, not ota's?

Cheers,
D.

On 10/11/2010, lanterma at ece.gatech.edu <lanterma at ece.gatech.edu> wrote:
> On Nov 10, 2010, at 2:51 PM, Richard Atkinson wrote:
>
>> Indeed. Even if they are similar circuits, it's not unreasonable for them
>> to sound different from either the NE diode bridges or the IG state
>> variable filters. After all, SSM2040s are simply quad cascaded OTA
>> filters, as are some IR3109 and CEM3320 configurations, but no-one accuses
>> them of sounding the same :)
>
> Be cautious with the CEM 3320 - the gain cells in it aren't usual
> voltage-in, current-out OTAs. They're current-in, current-out devices that
> have some strange biasing requirements. I don't recall seeing anything else
> like them.
>
> - Aaron
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>