[sdiy] SSM2164 Filter Cells

[David G. Dixon]

> Please see Fig. 23 "Simplified Schematic" in the datasheet of SSM2164.
> Transistors at the output stage are almost saturated.
> Its output voltage swing is limited to less than 0.3V.
> Therefore, connecting to a virtual ground input like inverting integrator
> is essential.

Sam, could you please explain how you draw that conclusion from Figure 23?
I must confess that staring at current mirrors and differential pairs sends
me reaching for the nearest drool cup!