[sdiy] Maxim analog switch ICs

[Steve Ridley]

> Here it is:
> http://www.uni-bonn.de/~uzs159/Switching.png
>
> However it is still untested, but I don't see any reason why not.
> Should be working with that 4052 also.

That system has been used in a variety of well known "top end"
professional mixing desks for many years, and works very well.

Typically signals would be high level (opamps running at up to ±18v)
but the CMOS switches would be run off ±5v.

They usually added another switch between the input resistor/switch
input node and 0v.   This would switch on and short the signal to
ground when the signal wasn't selected.  This reduces breakthrough
significantly.


Steve