(2) suppose the open-loop amplifier (or simply the OpAmp) in the above feedbackamplifier has the following simulated magnitude and phase response. Some of the datapoints are given below:f3 =175kHz, Mag(f;)= 42DB, Phase(f;) =-180degf, =120kHz, Mag(f;)= 48DB, Phase(f,) =-150degfo =100kHz, Mag(f.)=51DB, Phase(f.)=-135degfs = 85kHz, Mag(f;)=534B, Phase(f;)=-115degf =77kHz, Mag(f.)=55dB, Phase(f,) =-105 degf3 = 45kHz, Mag(f,)=57&B, Phase(f;) =-75 deg%3D%3DPhase (deg)20 loglal(dB)7060-504240-100-15020-180-200-250(Hz) -27010Mf (Hz)-10Ik10k100kIM10MIk10k100kIM(a) Magnitude(b) Phase(without pole compensation), from the plots or the data given, calculate the requiredfeedback coefficient B for a phase margin of 75 degrees.

The magnitude response is the ratio of the output signal's frequency amplitude to the input signal's…

(2) suppose the open-loop amplifier (or simply the OpAmp) in the above feedback amplifier has the following simulated magnitude and phase response. Some of the data points are given below: f3 =175kHz, Mag(f;)=42dB, Phase(f,) =-180deg f, =120kHz, Mag(f;)= 48DB, Phase(f,)=-150deg fo =100kHz, Mag(f.)=51dB, Phase(f.) =-135deg fs = 85kHz, Mag(f;)=53dB, Phase(f;)=-115deg f =77kHz, Mag(f.)=55dB, Phase(f,) =-105 deg f3 = 45kHz, Mag(f;)=57&B,Phase(f;) =-75deg %3D %3D Phase (deg) 20 loglAl(dB) 70 60 -50 42 40 -100 -150 20 -180 -200 -250 (Hz) -270 10M S (H2) -10 Ik 10k 100k IM 10M Ik IM (a) Magnitude (b) Phase (without pole compensation), from the plots or the data given, calculate the required feedback coefficient B for a phase margin of 75 degrees.

(2) suppose the open-loop amplifier (or simply the OpAmp) in the above feedback amplifier has the following simulated magnitude and phase response. Some of the data points are given below: f3 =175kHz, Mag(f;)=42dB, Phase(f,) =-180deg f, =120kHz, Mag(f;)= 48DB, Phase(f,)=-150deg fo =100kHz, Mag(f.)=51dB, Phase(f.) =-135deg fs = 85kHz, Mag(f;)=53dB, Phase(f;)=-115deg f =77kHz, Mag(f.)=55dB, Phase(f,) =-105 deg f3 = 45kHz, Mag(f;)=57&B,Phase(f;) =-75deg %3D %3D Phase (deg) 20 loglAl(dB) 70 60 -50 42 40 -100 -150 20 -180 -200 -250 (Hz) -270 10M S (H2) -10 Ik 10k 100k IM 10M Ik IM (a) Magnitude (b) Phase (without pole compensation), from the plots or the data given, calculate the required feedback coefficient B for a phase margin of 75 degrees.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

(2) suppose the open-loop amplifier (or simply the OpAmp) in the above feedback
amplifier has the following simulated magnitude and phase response. Some of the data
points are given below:
f3 =175kHz, Mag(f;)= 42DB, Phase(f;) =-180deg
f, =120kHz, Mag(f;)= 48DB, Phase(f,) =-150deg
fo =100kHz, Mag(f.)=51DB, Phase(f.)=-135deg
fs = 85kHz, Mag(f;)=534B, Phase(f;)=-115deg
f =77kHz, Mag(f.)=55dB, Phase(f,) =-105 deg
f3 = 45kHz, Mag(f,)=57&B, Phase(f;) =-75 deg
%3D
%3D
Phase (deg)
20 loglal(dB)
70
60
-50
42
40
-100
-150
20
-180
-200
-250
(Hz) -270
10M
f (Hz)
-10
Ik
10k
100k
IM
10M
Ik
10k
100k
IM
(a) Magnitude
(b) Phase
(without pole compensation), from the plots or the data given, calculate the required
feedback coefficient B for a phase margin of 75 degrees.

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