[sdiy] SSM2164 Spice Model

[David G. Dixon]

> In EWB5 Pro, the expression should be
> I = I(5)*10^(-1.5*V(1))  ~not~ I = I(V5)*10^(-1.5*V(1))
> 
> It looks like it works. I made a "vca"
> from Fig 24 "Basic Quad VCA" and it gives an inverted output.
> 
> Can anyone confirm that this is REALLY true ?

Yes.  The 2164 feeds current to an inverting summer, so the output is
inverted relative to the input.