R V,o R oV, The figure above shows an op amp that is ideal except for having a finite open loop gain and is used to realize an inverting amplifier whose gain has a nominal magnitude G= R,/R, .- To compensate for the gain reduction due to the finite A, a resistor R_ is shunted across R,. Show that perfect compensation is achieved when R_ is selected according to R. А-G R 1+G

R V,o R oV, The figure above shows an op amp that is ideal except for having a finite open loop gain and is used to realize an inverting amplifier whose gain has a nominal magnitude G= R,/R, .- To compensate for the gain reduction due to the finite A, a resistor R_ is shunted across R,. Show that perfect compensation is achieved when R_ is selected according to R. А-G R 1+G

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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Discussion: 1- What kind of restrictions Non- inverting op-amp face compared to inverting op-amp? 2- State 5 different types of op amp. Demonstrate them briefly then draw the circuit diagram for each kind. 3- For an inverting op amp, if the voltage input peak equal to 10.2 V, R=10KQ and RF 2002, find Vo and the voltage gain. Assume the input signal has a sinusoidal behavior. 4- Consider an OP amp connected to the inverting configuration to realize a closed-loop gain of -50 V/V utilizing resistors o f 1 k2 and 50 kQ. A load resistance RL is connected from the output to ground, and a low-frequency sine wave signal of peak amplitude Vp is applied to the input. Let the OP amp be ideal except that its output voltage saturates at +/- 10V and its output current is limited to the range +/-15 mA. For RL = 1 k2, what is the maximum possible value of Vp while an undistorted output sinusoid is obtained?
Draw the circuit diagram of the basic noninverting amplifier configuration. Give an expression for the closed-loop voltage gain of the circuit in terms of the resistances, assuming an ideal op amp. Give expressions for the input impedance and output impedance of the circuit.
a.derive the expression for the close- loop gain for an op amp non inverting amplifier b.the input of an op amp differentiator is a sinosiodial voltage peak of value 150uV voltage of frequency 10hz.determine the output voltage if the R=25ohms and C=2uf. c.An inverting amplifier has Rf=200ohms and R1= 12ohms. Determine the amplifier circuit voltage gain,input resistance and output resistance, determine also the output voltage, and input current if the voltage is 0.3. Assump it is an ideal op amp.
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(c) (d) Figure Figure Q1b shows an Op-amp with a bias current compensating resistor (Rp). R₁ V₂. Vp IB. R₂ W A • V₂ Figure Olb (i) Derive an expression for V. to quantify the effect of bias currents IB+ and IB-. [3] (ii) Explain how you would choose a value for Rp to reduce the output error due to the bias currents, IB+ and IB.. [3] Referring to an op-amp define what is meant by common-mode rejection ratio (CMRR) and explain the effect a finite CMRR would have on high-precision applications. [4] Page 2 of 7 Continued overleaf
A certain op-amp has three internal amplifier stages, with midrange gains of 30 dB, 40 dB, and 20 dB. Each stage also has a critical frequency associated with it as follows: f= 600 Hz, fcz = 50 kHz, and fc3 = 200 kHz. a. What is the midrange open-loop gain of the op-amp expressed in dB? b. What is the total phase shift through the amplifier, including inversion, when the signal frequency is 10 kHz?
1. The virtual short is applicable A. If one of the input is tied to the ground B. Only if there is a feedback C. All the time D. Depending on the components used 2. What ideal characteristic of Op-Amp contributes to the Virtual Short concept? A. Zero Ohm Input Resistance B. Zero Ohm Output Resistance C. Input terminals do not let current to flow D. Infinite gain 3. Op-amp closed loop gain varies A. True B. Depending on the resistor values used C. Not applicable D. False
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a) Design an inverting amplifier with a gain of 4. Use an ideal op amp, a 30 kohm resistor in the feedback path, and +-12 v power supplies. b) Using your design from part a, determine the range of input voltages that will keep the op amp in it's linear operating region. c) suppose you wish to amplify a 2 V signal, using your design from part a, with a variable feedback resistor. What is the largest value of feedback resistance that keeps the op amp in its linear operation region? Using this resistor value, what is the new gain of the inverting amplifier?
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