[sdiy] unbuffered CMOS

[Ken Stone]

>I was thinking about the uses that we have for CMOS logic devices in the 
>synth world - both digital and analog - but especially analog.
>
>Sometimes 'unbuffered' CMOS devices are specifically called for. I assumed 
>this was simply because  when using them as analog devices the buffered 
>units would behave more nonlinear in a possibly nondesirable way. But I keep 
>thinking that there're other reasons to use unbuffered devices: seems like 
>they'd use less current.

simplified explanation -

The main reason is the UB is pretty much just a pair of transistors, while B
is an array of transistors - a damn site harder (or impossible) to get to
work in any linear mode as you have no access to the inner transistors.

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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