The switch I'm using (DG212) has a capacitance of 5pF and a resistance of 115 ohms. I don't know how to simulate this switch in LTspice.
Now I need to understand the whole picture here. I have an input of 0.89 V to 1.51V into the switch. A logic input is needed to control the switch, which comes in the form of the 5 V pulse running at 750 kHz. When the switch closes the hold capacitor charges. When the switch opens, the capacitor discharges into the switch and the second op-amp. I'm not quite seeing what you are trying to explain. I've almost got it though. I didn't see a threshold voltage for this switch, unless I missed it someplace on the datasheet.
Thank you.
Now I need to understand the whole picture here. I have an input of 0.89 V to 1.51V into the switch. A logic input is needed to control the switch, which comes in the form of the 5 V pulse running at 750 kHz. When the switch closes the hold capacitor charges. When the switch opens, the capacitor discharges into the switch and the second op-amp. I'm not quite seeing what you are trying to explain. I've almost got it though. I didn't see a threshold voltage for this switch, unless I missed it someplace on the datasheet.
Thank you.