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how to simulate the cutoff frequency of MOS with spice?

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meseasky

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spice frequency cut-off simulation

can any body give me an example? a circuit or a netlist

Thanks!
 

hspice cut off frequency

The cut off frequency depends on the circuit, what you need to do is use one of the following during your simulation,

AC Frequency response

.AC DEC points_per_decade freq_start freq_stop
.AC OCT points_per_octave freq_start freq_stop
.AC LIN total_points freq_start freq_stop
 

spice cut off frequency

Old Nick said:
The cut off frequency depends on the circuit, what you need to do is use one of the following during your simulation,

AC Frequency response

.AC DEC points_per_decade freq_start freq_stop
.AC OCT points_per_octave freq_start freq_stop
.AC LIN total_points freq_start freq_stop
Click to expand...

thank you Nick, but what if i want to know the intrinsic cutoff frequency of a MOSFET? i mean there might be some methods to mesure it, i really want a circuit.
 

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