[sdiy] Can google's free* 180nm OSHW foundry be used for synth parts?

[mskala at northcoastsynthesis.com]

On Sat, 6 Aug 2022, usenet at teply.info wrote:
> So in total, I'd say it would be a lot of work, probably a few design respins
> *AND* a bunch of luck to get something out of it that's useful for SDIY
> purposes besides the obvious digital parts the process has been optimized for.

Back in the day people used CMOS inverters like inverting op amps because
it was easier to get six of those in a package than four real op amps.
Even now people use those circuits for basic oscillators and Wasp filters
because of trying to recreate old designs.  I'm not sure that we need
custom chips just to build a bunch of inverters, but it does suggest that
a process intended for digital CMOS can build at least a few things synth
nerds would use.

-- 
Matthew Skala
North Coast Synthesis Ltd.