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C-V curve of MOS varactor

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hanikapa

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Does anybody knows, how can I get the C-V curve of MOS varactor in cadence spectre?
Thanks
 

dick_freebird

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Apply a linear ramp to gate in a transient simulation, calculator
Q=integral (i(gate))
C=Q*v(gate)
plot C with x axis changed to v(gate)

Or run a parametric analysis stepping gate and set C=op(cgg)
 

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