[sdiy] Re-spin the classic ICs?

[Colin f]

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Metrophage
> Sent: 27 May 2005 16:07
> To: Colin f; synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Re-spin the classic ICs?
> 
> And then divvy up each wafer for various processes and packages? That
> would probably makes things far more difficult, and 
> expensive. Besides,
> I doubt that the CEM3340 and SSM2040 (for example) were meant for the
> same kind of wafer. The 2044 ended up not sounding quite as good.

I think any of these old devices would need to be redesigned for more recent
processes, so you would re-design them for the same process.
Maybe what's needed is a more generic 'analogue building block' IC, that
could be used in substitute circuits to cover most of the unobtainable
devices.

Cheers,
Colin f