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

[Matthew Arthur]

 a CMOS ota is possible, analog devices has an example design in one of
there book pdf things. I see them in other textbooks as well.

 I don't know how well these textbook circuits perform irl tho

On Sat, Aug 6, 2022, 4:45 PM Mike Bryant <mbryant at futurehorizons.com> wrote:

>
>
> > I wonder if you can mix bipolar and MOS on the same die ?
>
> You can, but it's a special process, imaginatively called BiCMOS.  I'm
> fairly sure the process involved here can't do it.
>
> I wonder if a CMOS equivalent to an OTA could be designed with CMOS
> transistors and an input resistor ?  Any thoughts ?
>
>
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