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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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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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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 

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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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111060752027 

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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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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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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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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