Pspice 4f2o3c

LINEAR INTEGRATED CIRCUITS PRACTICAL

PSPICE

PEEYUSH GUPTA 71/EC/08

EXPERIMENT NO.1 SIMULATE AN OPAMP AS INVERTING AND NON-INVERTING AMPLIFIER

Inverting Amplifier - UA741 R

Vin

R

1

1

7

1 k

O + U

0

1

k

P

A

O

-

2

F 2

4

U

M

P

T

6

Vo

0

CODE DC ANALYSIS

*Opamp 741 as inverting amplifier R1 1 2 1K R2 2 6 2K *X NI INV VP VN o/p X 0 2 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V Vin 1 0 DC 0V

.Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .dc Lin Vin -10 10 0.1 .Probe .end

Rf = 2k 20V

10V

0V

-10V

-20V -10V -8V V(6)V(1)

-6V

-4V

-2V

0V

2V

4V

Vin

Rf = 4k

6V

8V

10V

20V

10V

0V

-10V

-20V -10V -8V V ( 6 )V ( 1 )

-6V

-4V

-2V

0V

2V

4V

6V

8V

10V

6V

8V

10V

Vin

Rf=6k 20V

10V

0V

-10V

-20V -10V -8V V ( 6 )V ( 1 )

-6V

-4V

-2V

0V

2V

4V

Vin

Rf=8k

20V

10V

0V

-10V

-20V -10V -8V V ( 6 )V ( 1 )

-6V

-4V

-2V

0V

2V

4V

6V

8V

10V

6V

8V

10V

Vin

Rf=10k 20V

10V

0V

-10V

-20V -10V -8V V ( 6 )V ( 1 )

-6V

-4V

-2V

0V

2V

4V

Vin

CODE

AC ANALYSIS

*Opamp 741 as inverting amplifier R1 1 2 1K R2 2 6 2K *X NI INV VP VN o/p X 0 2 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V Vin 1 0 AC 0.1V .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .ac DEC 100 1 1MEG .Probe .end

Rf=2k

200mV

150mV

100mV

50mV 1.0Hz 3.0Hz V(6)V(1)

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz

10KHz

30KHz

1 0 0K Hz 30 0K Hz1 .0 MH z

Frequency

Rf=4k 400mV

300mV

200mV

100mV

0V 1.0Hz 3.0Hz V(6)V(1)

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz

10KHz

30KHz

100KHz 300KHz1.0MHz

Frequency

Rf=6k

600mV

400mV

200mV

0V 1.0Hz 3.0Hz V(6)V(1)

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz

10KHz

30KHz

1 0 0K Hz 30 0K Hz1 .0 MH z

Frequency

Rf=8k 800mV

600mV

400mV

200mV

0V 1.0Hz 3.0Hz V ( 6 )V ( 1 )

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz 10KHz

30KHz

1 0 0 K H z 3 0 0 K H z1 . 0 M H z

Frequency

Rf=10k

1.0V

0.5V

0V 1.0Hz 3.0Hz V(6) V(1)

10Hz

30Hz

100Hz

300Hz

1.0KHz

3.0KHz

10KHz

30KHz

100KHz

300KHz 1.0MHz

Frequency

OUTPUT VS INPUT FOR DIFFERENT VALUES OF RESISTANCE Rf

Rf=2k

500mV

0V

-500mV 0s 0.5ms V(6)V(2)V(1)

1.0ms

1.5ms

2.0ms

2.5ms Time

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Rf=4k

800mV

400mV

0V

-400mV

-800mV 0s

0.5ms V(6) V(2) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Rf=6k

1.0V

0.5V

0V

-0.5V

-1.0V 0s

0.5ms V(6)V(2)V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Rf=8k

2.0V

1.0V

0V

-1.0V 0s

0.5ms V(6) V(2) V(1)

1.0ms

1.5ms

2.0ms

2.5ms Time

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Non-Inverting Amplifier - UA741 R

R

1 0

7

1

O + U

3 V 0 V

0

d

O

-

2

1 k

F 2 k

1

4

P U

A

M

P

T

6

Vo

i n

c

0

CODE DC ANALYSIS

*Opamp 741 as non-inverting amplifier R1 0 2 1K R2 2 6 2K *X NI INV VP VN o/p X 3 2 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V Vin 3 0 DC 0V .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .dc Lin Vin -10 10 0.1 .Probe .end

Rf=2k

20V

10V

0V

-10V

-20V -10V -8V V(6) V(3)

-6V

-4V

-2V

0V

2V

4V

6V

8V

10V

6V

8V

10V

Vin

Rf=4k 20V

10V

0V

-10V

-20V -10V -8V V(6) V(3)

-6V

-4V

-2V

0V

2V

4V

Vin

Rf=6k

20V

10V

0V

-10V

-20V -10V -8V V(6) V(3)

-6V

-4V

-2V

0V

2V

4V

6V

8V

10V

6V

8V

10V

Vin

Rf=8k 20V

10V

0V

-10V

-20V -10V -8V V(6) V(3)

-6V

-4V

-2V

0V

2V

4V

Vin

Rf=10k

20V

10V

0V

-10V

-20V -10V -8V V(6) V(3)

-6V

-4V

-2V

0V

2V

4V

6V

8V

10V

Vin

CODE AC ANALYSIS

*Opamp 741 as non-inverting amplifier R1 0 2 1K R2 2 6 10K *X NI INV VP VN o/p X 3 2 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V Vin 3 0 AC 0.1V .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .ac DEC 100 1 1MEG .Probe .end

Rf=2k 300mV

200mV

100mV

0V 1.0Hz 3.0Hz V(6) V(3)

10Hz

30Hz

100Hz

300Hz

1.0KHz

3.0KHz

10KHz

30KHz

100KHz

300KHz 1.0MHz

Frequency

Rf=4k

600mV

400mV

200mV

0V 1.0Hz 3.0Hz V(6) V(3)

10Hz

30Hz

100Hz

300Hz

1.0KHz

3.0KHz

10KHz

30KHz

100KHz

300KHz 1.0MHz

Frequency

Rf=6k

800mV

600mV

400mV

200mV

0V 1.0Hz 3.0Hz V ( 6 )V ( 3 )

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz

10KHz

30KHz

1 0 0 K H z 3 0 0 K H z1 . 0 M H z

Frequency

Rf=8k

1.0V

0.5V

0V 1.0Hz 3.0Hz V ( 6 )V ( 3 )

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz

10KHz

30KHz

1 0 0 K H z 3 0 0 K H z1 . 0 M H z

Frequency

Rf=10k 1.2V

0.8V

0.4V

0V 1.0Hz 3.0Hz V ( 6 )V ( 3 )

10Hz

30Hz

100Hz

300Hz

1.0KHz 3.0KHz Frequency

10KHz

30KHz

1 0 0 K H z 3 0 0 K H z1 . 0 M H z

OUTPUT VS INPUT FOR DIFFERENT VALUES OF RESISTANCE Rf

Rf=2k 400mV

200mV

0V

-200mV

-400mV 0s 0.5ms V(6) V(3)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Rf=4k

1.0V

0.5V

0V

-0.5V 0s

0.5ms V(6)V(3)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Rf=6k 800mV

400mV

0V

-400mV

-800mV 0s 0.5ms V ( 6 )V ( 3 )

1.0ms

1.5ms

2.0ms

2.5ms Time

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Rf=8k 1.0V

0.5V

0V

-0.5V

-1.0V 0s 0.5ms V ( 6 )V ( 3 )

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Rf=10k

2.0V

1.0V

0V

-1.0V

-2.0V 0s 0.5ms V ( 6 )V ( 3 )

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

EXPERIMENT NO.2

SIMULATE AN OPAMP AS AN INTEGRATOR AND A DIFFERENTIATOR

Differentiator using Opamp UA741 R

1 Vin

C 0

2 . 2

R

7

1

u F 1 0 0

3

0

O

O + U

0

2 2 k

1

4

P U

A

M

P

T

6

Vo

CODE * opamp 741 as differentiator R1 1 2 100 C 2 3 0.2uf R2 3 6 1K X 0 3 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V Vin 1 0 Pulse(-1 1 1f 1f 1f 0.5ms 1ms) *Vin 1 0 Pulse(-1 1 1n 0.5m 0.5m 1n 1ms) *Vin 1 0 Sin(0 1 1K) .Lib C:\Cadence\SPB_16.3\tools\pspice\library\Eval.Lib .tran 0.01ms 5ms 0ms 0.01ms .Probe .end

FOR SQUARE WAVE

20V

10V

0V

-10V

-20V 0s

0.5ms V(6) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

FOR TRIANGULAR WAVE 1.0V

0.5V

0V

-0.5V

-1.0V 0s

0.5ms V(6) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

FOR SINE WAVE

2.0V

1.0V

0V

-1.0V

-2.0V 0s

0.5ms V(6) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

Integrator using Opamp UA741 C

Vin 1

R

7

1

1 0 0

2

0

O

O + U

0

0 . 2 u

1

4

P U

F A

M

P

T

6

Vo

CODE * Opamp 741 as integrator R1 1 2 100 C 2 6 0.2uf X 0 2 7 4 6 UA741 VP 7 0 DC 12V VN 0 4 DC 12V *Vin 1 0 Pulse(-1 1 1f 1f 1f 0.5ms 1ms) *Vin 1 0 Pulse(-1 1 1n 0.5m 0.5m 1n 1ms) Vin 1 0 Sin(0 1 1K) .Lib C:\Cadence\SPB_16.3\tools\pspice\library\Eval.Lib .tran 0.01ms 5ms 0ms 0.01ms .Probe .end

FOR SQUARE WAVE

20V

10V

0V

-10V

-20V 0s

0.5ms V(6) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

FOR TRIANGULAR WAVE 20V

10V

0V

-10V

-20V 0s

0.5ms V(6) V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms

Time

FOR SINE WAVE

20V

10V

0V

-10V

-20V 0s V(6)

0.5ms V(1)

1.0ms

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

4.0ms

4.5ms

Time

EXPERIMENT NO 3

5.0ms

CREATE A MACROMODEL OF OPAMP.SIMULATE A NONINVERTING AMPLIFIER AND ITS COMPENSATED VERSION. 1. SUBCIRCUIT OF OPAMP 1 * subcircuit of opamp1 .subckt opamp1 3 2 6 R1 3 0 10MEG R2 3 2 2MEG R3 2 0 10MEG E1 4 0 3 2 2E5 R 4 5 1K C 5 0 32uF E2 10 0 5 0 1 R0 10 6 75 .ends

2. UNCOMPENSATED NON-INVERTING AMPLIFIER * uncompensated non inverting amplifier R1 0 2 1K R2 2 6 2K X1 3 2 6 opamp1 Vin 3 0 AC 1 .lib C:\s\Nishant\Documents\pspice\opamp1.lib .ac DEC 100 1 1meg

.probe .end

4.0V

3.0V

2.0V

1.0V

0V 1 .0 Hz 3.0Hz V(6) V(3) V(3)

10Hz

30Hz

100Hz

300Hz

1. 0KHz

3.0KHz

10K Hz

30KHz

100KHz

300KHz

1.0MHz

Freq ue ncy

3. COMPENSATED INVERTING MODEL USING 2 OPAMPS * compensated inverting Model using 2 opamps X1 3 2 6 opamp1 X2 6 5 4 opamp1 R1 2 0 1k R2 4 2 1k R3 6 5 1k R4 5 4 1k Vin 3 0 AC 1 .lib C:\s\Nishant\Documents\pspice\opamp1.lib .ac DEC 100 1 1meg .probe .end

4.0V

3.0V

2.0V

1.0V 1.0Hz 3.0Hz V(6) V(3) V(3)

10Hz

30Hz

100Hz

300Hz

1.0KHz

3.0KHz

10KHz

30KHz

100KHz

300KHz 1.0MHz

Frequency

4. COMPENSATED INVERTING AMPLIFIER USING 3 OPAMP(AC ANALYSIS) * compensating inverting amplifier using 3 opamps X1 2 1 4 opamp1 X2 3 1 7 opamp1 X3 1 9 6 opamp1 R1 4 3 2k R2 3 0 2k R3 3 6 2k R4 7 9 0.5k R5 9 6 0.5k R6 2 0 2k R7 2 6 0.5k Vin 1 0 AC 1 .lib C:\s\Nishant\Documents\pspice\opamp1.lib

.ac DEC 50 1 1MEG .probe .end

6.0V

4.0V

2.0V

0V 0Hz 0.1MHz V(6) V(1) V(1)

0.2MHz

0.3MHz

0.4MHz

0.5MHz

0.6MHz

0.7MHz

0.8MHz

0.9MHz

1.0MHz

Frequency

EXPERIMENT NO 4 SIMULATE THE DIFFERENTIAL AMPLIFIER BIASED WITH THE CURRENT MIRROR(USE BJT MODEL FROM LIBRARY OR THE FOLLOWING MODEL) .modelname npn(is=40fa, bf=200, Vaf=100)

1) DC ANALYSIS *simulating differential amplifier Q1 4 1 3 Q2N2222 Q2 5 2 3 Q2N2222 Q3 8 8 9 Q2N2222 Q4 3 8 9 Q2N2222 *Vc1 and Vc2 for (1) Vc1 6 4 DC 0V Vc2 6 5 DC 0V E1 1 10 20 0 0.5 E2 2 10 0 20 0.5 Vcm 10 0 DC 0V Rb 8 0 4.3K Vcc 6 0 DC 5V Vee 9 0 DC -5V Vd 20 0 DC 0V Rd 20 0 1K .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .dc Vd -5 5 0.1 .probe .end

1.2mA

0.8mA

0.4mA

0A -5.0V -4.0V I(Vc1) I(Vc2)

-3.0V

-2.0V

-1.0V

0.0V

1.0V

2.0V

3.0V

Vd

2. DIFFERENTIAL MODE DC ANALYSIS

*simulating differential amplifier Q1 4 1 3 Q2N2222 Q2 5 2 3 Q2N2222 Q3 8 8 9 Q2N2222 Q4 3 8 9 Q2N2222 *Rc1 and Rc2 for (2) Rc1 6 4 10K Rc2 6 5 10K E1 1 10 20 0 0.5 E2 2 10 0 20 0.5 Vcm 10 0 DC 0V Rb 8 0 14.3K

4.0V

5.0V

Vcc 6 0 DC 15V Vee 9 0 DC -15V Vd 20 0 DC 0V Rd 20 0 1K .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .dc Vd -5 5 0.1 .probe .end

20V

10V

0V

-10V

-20V -5.0V -4.0V -3.0V V(4) V(5) V(4)- V(5)

-2.0V

-1.0V

0.0V

1.0V

2.0V

3.0V

Vd

3. TRANSIENT ANALYSIS

A)DIFFERENTIAL MODE TRANSIENT ANALYSIS *simulating differential amplifier Q1 4 1 3 Q2N2222 Q2 5 2 3 Q2N2222

4.0V

5.0V

Q3 8 8 9 Q2N2222 Q4 3 8 9 Q2N2222 Rc1 6 4 10K Rc2 6 5 10K

E1 1 10 20 0 0.5 E2 2 10 0 20 0.5 Vcm 10 0 DC 0V Rb 8 0 14.3K Vcc 6 0 DC 15V Vee 9 0 DC -15V Vd 20 0 Sin(0 0.02 1k) Rd 20 0 1K .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .tran 0.1ms 5ms 0ms 0.01ms .probe .end

-0T

-10T

-20T

-30T

-40T 0s

0.5ms 1.0ms (V(4)-V(5))/ V(20)

1.5ms

2.0ms

2.5ms

3.0ms

3.5ms

Time

B)COMMON MODE TRANSIENT ANALYSIS *simulating differential amplifier Q1 4 1 3 Q2N2222 Q2 5 2 3 Q2N2222 Q3 8 8 9 Q2N2222 Q4 3 8 9 Q2N2222 Rc1 6 4 10K Rc2 6 5 10K

E1 1 10 20 0 0.5 E2 2 10 0 20 0.5 Vcm 10 0 Sin(0 2 1K) Rb 8 0 14.3K Vcc 6 0 DC 15V

4.0ms

4.5ms

5.0ms

Vee 9 0 DC -15V Vd 20 0 DC 0V Rd 20 0 1K .Lib C:\Cadence\SPB_16.3\tools\pspice\library\eval.lib .tran 0.1ms 5ms 0ms 0.01ms .probe .end

10

5

0 0s

0.5ms 1.0ms ( V ( 4 ) - V ( 5 ) ) / V V( (4 1) 0V)( 5 )

1.5ms

2.0ms

2.5ms Time

3.0ms

3.5ms

4.0ms

4.5ms

5.0ms