Aaron,
Quote:its actually based on Fig. 8.10. Instead of tying the positive terminal to ground, an additional switch is connected which should inject an equal amount of charge as the main switch as the SHA goes into hold mode. This is supposed to reduce the hold step.
In Fig. 8.10, the switch S1 is parallel with the additional cap, NOT in series with it. I mean that there must not be a point which is always float. The positive input of the amplifier is tied to ground when S1 is turned on.
Yawei