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Joshi Yogesh H.
111060752027
Seer Akademi Page 1
Assignment-2
Common Source Amplifier:-
L=360nm
Wn=20um
Schematic Diagram:-
Hspice code to set the operating point:-
common source amplifier L=360um
vdd 1 0 dc 5v
Is 2 0 dc 100ua
M1 3 4 0 0 CMOSN L=0.36u W=20u
M2 3 2 1 1 CMOSP L=0.36u W=50uM3 2 2 1 1 CMOSP L=0.36u W=50u
vin 4 0
.LIB "ibm_013um_model" CMOS_MODELS
.DC vin 0 5 0.001
.print dc v(3)
.print dc v(vin)
.option post=2
.end
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Joshi Yogesh H.
111060752027
Seer Akademi Page 2
Hspice code to observe the gain
common source amplifier L=360um
vdd 1 0 dc 5v
Is 2 0 dc 100uaM1 3 4 0 0 CMOSN L=0.36u W=20u
M2 3 2 1 1 CMOSP L=0.36u W=50u
M3 2 2 1 1 CMOSP L=0.36u W=50u
vin 4 0 ac sin(0.404 0.05 100 0 0 0)
.LIB "ibm_013um_model" CMOS_MODELS
.tran 0.1ms 50ms
.plot tran v(3)
.plot tran v(vin)
.print tran v(3)
.print tran v(vin)
.TF v(3) vin
.option post=2
.end
AC Analysis:
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Joshi Yogesh H.
111060752027
Seer Akademi Page 3
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = -37.3162
input resistance at vin = 1.000e+20
output resistance at v(3) = 9.8005k
Comman Source Amplifier(L=540um)
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = -39.9020
input resistance at vin = 1.000e+20output resistance at v(3) = 13.0718k
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Joshi Yogesh H.
111060752027
Seer Akademi Page 4
Comman Source Amplifier(L=720um)
AC Analysis:
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = -41.1448input resistance at vin = 1.000e+20
output resistance at v(3) = 15.9568k
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Joshi Yogesh H.
111060752027
Seer Akademi Page 5
Common Drain Amplifier:-
L=360nm
Wn=20um
Schematic Diagram
Hspice code to set the operating point:-
common drain amplifier L=360um
vdd 1 0 dc 5v
Is 1 2 dc 100ua
M1 1 4 3 3 CMOSN L=0.36u W=20u
M2 3 2 0 0 CMOSN L=0.36u W=20u
M3 2 2 0 0 CMOSN L=0.36u W=20u
vin 4 0
.LIB "ibm_013um_model" CMOS_MODELS
.DC vin 0 5 0.001
.print dc v(3)
.print dc v(vin)
.option post=2
.end
Hspice code to observe the gain:-
common drain amplifier
vdd 1 0 dc 5vIs 1 2 dc 100ua
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Joshi Yogesh H.
111060752027
Seer Akademi Page 6
M1 1 4 3 3 CMOSN L=0.36u W=20u
M2 3 2 0 0 CMOSN L=0.36u W=20u
M3 2 2 0 0 CMOSN L=0.36u W=20u
vin 4 0 ac sin(2.873 2 100 0 0 0)
.LIB "ibm_013um_model" CMOS_MODELS
.tran 0.1ms 50ms
.plot tran v(3)
.plot tran v(vin)
.print tran v(3)
.print tran v(vin)
.TF v(3) vin
.option post=2
.end
AC Analysis:
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = 988.4237m
input resistance at vin = 1.000e+20
output resistance at v(3) = 392.5223
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Joshi Yogesh H.
111060752027
Seer Akademi Page 7
Comman Drain Amplifier(L=540um)
AC Analysis:
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = 989.5913m
input resistance at vin = 1.000e+20
output resistance at v(3) = 448.9023
Comman Drain Amplifier(L=720um)
AC Analysis:
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Joshi Yogesh H.
111060752027
Seer Akademi Page 8
Gain Analysis in spice:-
small-signal transfer characteristics
v(3)/vin = 989.7858minput resistance at vin = 1.000e+20
output resistance at v(3) = 496.4157