I'm simulating a CS-DAC, and was experimenting with the effect of an extra capacitor on the tail node.
To do that, I placed an ideal cap from analogLib on the node, and then measured in three cases:
- No capacitor installed,
- 100fF capacitor installed,
- 100fF capacitor installed but ignored
Here are the results:
As you can see, there's almost no difference between ignoring or not ignoring the cap! I assumed the ignore instance option would cause it to act like the case without any capacitor.
I would appreciate your suggestions.
Best regards,
Mahdi