Below is the entire circuit, the Op Amp is generating a voltage to Vsink, which then connects to a gate of a NMOSFET.
When the Tox of the NMOSFET is 1e-7, the capacitance is small, so Vsink voltage profile is expected. (-15V->15V)
However for design reason, I need to have the Tox as 1e-9, but then the Op Amp is not strong enough to drive the Vsink because of the bigger oxide capacitance at the NMOSFET.
How should I modify the Op Amp (changing the parameters) to give expected Vsink at Tox=1e-9
View attachment 277924
View attachment 277925
View attachment 277926
When the Tox of the NMOSFET is 1e-7, the capacitance is small, so Vsink voltage profile is expected. (-15V->15V)
However for design reason, I need to have the Tox as 1e-9, but then the Op Amp is not strong enough to drive the Vsink because of the bigger oxide capacitance at the NMOSFET.
How should I modify the Op Amp (changing the parameters) to give expected Vsink at Tox=1e-9
View attachment 277924
View attachment 277925
View attachment 277926
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