EEC210 Cascode Current Mirror Simulation - Problem Set #4, Problem 1
*
* Specify the width & length in one place, for easier changes.
*
.param width=100u length=1u
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* Power Supply
*
vdd vdd 0  3
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* Input
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ir  vdd 3  100u
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* Test Circuit
*
vo  out 0  3
m1  1   4  0  0 cmosn l=length w=width
m2  out 3  1  1 cmosn l=length w=width
m3  3   3  4  4 cmosn l=length w=width
m4  4   4  0  0 cmosn l=length w=width
*Note that connecting the body to the source eliminates the body effect.
*Remember that I asked you to ignore body effect for this problem.
*
* Models
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.model cmosn nmos level=1 lambda=0.024 vto=0.6 kp=194u ld=0.09u
*Note that lambda = (dXd/dVds)/Leff = 0.02/0.82=0.0244
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* Don't print the model parameters
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.options nomod
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* Analysis
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.op 
.dc vo 0 3 0.1
.print dc i(m2)
.tf v(out) vo
.end