ywguo
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Hi, Shariman,
Basically I think the offset voltage simulation is based on your estimation of the mismatch of the relative transistors. Ideally it is of zero offset voltage for a differential comparator. The SPICE model doesn't contain the transitor mismatch parameters. So you can't simulate the offset voltage unless you modify some parameters or modify the dimensions of the relative transistors. Of course a wrong estimation of the mismatch will result in a wrong offset voltage. :)
Best regards, Yawei
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