Electronic Circuit-II

Slides:

Advertisements

Similar presentations

1.6 Op-Amp Basics High input impedance Low output impedance Made using difference amplifiers having 2 inputs and at least 1 output 1 Note: Terminals for.

Advertisements

Operational Amplifier

Biomedical Instrumentation I

CHAPTER 3: SPECIAL PURPOSE OP-AMP CIRCUITS

Chapter 18 Operational Amplifiers. The typical op amp has a differential input and a single-ended output. Class B push-pull emitter follower Diff amp.

CHAPTER 1: INTRODUCTION TO OPERATIONAL AMPLIFIERS

Lecture 91 Loop Analysis (3.2) Circuits with Op-Amps (3.3) Prof. Phillips February 19, 2003.

Operational Amplifier

Chapter 2 – Operational Amplifiers

ECE 2006 Chapter 5: Operational Amplifiers. Differential Amplifier Not Practical Prior to IC Fabrication 2 Inputs, Output is A v *(V 1 - V 2 )

Chapter 2 – Operational Amplifiers Introduction Textbook CD

Chapter 13: Operational Amplifiers

Department of Information Engineering357 Feedback Op amp golden rules Approximations: 1.Voltage difference between the two inputs is zero 2.Input draws.

Operational Amplifiers

IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS

Analog Electronics Lecture 5.

09/16/2010© 2010 NTUST Today Course overview and information.

Inverting Amplifier. Introduction An inverting amplifier is a type of electrical circuit that reverses the flow of current passing through it. This reversal.

© 2012 Pearson Education. Upper Saddle River, NJ, All rights reserved. Electronic Devices, 9th edition Thomas L. Floyd Electronic Devices Ninth.

Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc. C H A P T E R 02 Operational Amplifiers.

Electronics Principles & Applications Fifth Edition Chapter 9 Operational Amplifiers ©1999 Glencoe/McGraw-Hill Charles A. Schuler.

St Columba’s High School Electricity and Electronics Op-amps.

ECE 342 – Jose Schutt-Aine 1 ECE 342 Solid-State Devices & Circuits 18. Operational Amplifiers Jose E. Schutt-Aine Electrical & Computer Engineering University.

OPERATIONAL AMPLIFIERS. BASIC OP-AMP Symbol and Terminals A standard operational amplifier (op-amp) has; V out is the output voltage, V+ is the non-inverting.

Operational Amplifier Basics Revision Question 4 An inverting comparator is shown in Figure 4. Calculate the switching threshold voltages and the hysteresis.

1 Op-Amp Imperfections in The Linear Range of Operations Gain and Bandwidth Limitations  Ideal op amps have infinite open-loop gain magnitude (A oL is.

Basic Electronics Ninth Edition Basic Electronics Ninth Edition ©2002 The McGraw-Hill Companies Grob Schultz.

Basics of Operational Amplifiers

Non - Inverting Amplifier

1 1.6 Op-Amp Basics Basic Op-Amp Op-amp equivalent circuit Practical (R i = high, R o = small)Ideal (R i =∞, R o = 0)

Operational Amplifiers Op Amps – a useful building block K. El-Ayat 11.

Applications of OP-AMP. Introduction Operational amplifier using IC's is inexpensive, versatile and easy to use. For this reason they are used not only.

For Third year Biophysics Special Students. Prepared by: Abdo A. Elfiky. Assistant Lecturer, Biophysics Department, Faculty of Science, Cairo University.

1 Operational Amplifiers n Ideal Op-Amp –input terminals –differential gain, open-loop gain.

OP-AMPs Op Amp is short for operational amplifier. An operational amplifier is modeled as a voltage controlled voltage source. An operational amplifier.

Lecture VIII Operational Amplifiers DMT 231/3 Electronic II.

ECE201 Lect-131 Loop Analysis (7.8) Circuits with Op-Amps (3.3) Dr. Holbert October 9, 2001.

مكبر العمليات Operational Amplifier Operational Amplifier and its circuit. Types of op-amp. Application of op- amp. Examples Operational Amplifier.

CHAPTER 20 OPERATIONAL AMPLIFIERS (OP-AMPS). Introduction to operational amplifiers Symbol and Terminals.

An operational amplifier (Op-Amp) is a differential amplifier that amplifies the difference of voltages applied to its two input terminals (differential.

Operational Amplifiers Chapter 10 Boylestad Electronic Devices and Circuit Theory.

OPERATIONAL AMPLIFIER

Lesson 3: Operational Amplifier Circuits in Analog Control

BIOPOTENTIAL AMPLIFIERS

Electronic Devices and Circuit Theory

Chapter 10: Operational Amplifiers

Open book, open notes, bring a calculator

1.6 Op-Amp Basics Basic Op-Amp Practical (Ri = high , Ro = small)

Analogue Electronic 2 EMT 212

Feedback No feedback : Open loop (used in comparators)

Electronic Devices Ninth Edition Floyd Chapter 12.

The open loop gain of this op-amp is 105 and the bandwidth is 10 Hz

Examples of Negative Feedback Applications: A) Inverting Amplifiers

Operational Amplifiers (Op Amps) in Chemical Instrumentation

Principles & Applications Operational Amplifiers

Wave Generation and Shaping

Department of CNET Electronic Circuit II

Operational Amplifiers

The Ideal Op Amp Inverting and non-Inverting configurations

Industrial Electronics

IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS

The Ideal Op Amp Inverting and non-Inverting configurations

Operational Amplifier (Op-Amp)-μA741

Chapter 4 – Operational Amplifiers – Part 2

TUTORIAL An inverting amplifier circuit using Op-amp 741 IC, a feedback resistor, Rf = 95 kΩ and input resistance, Rin is used in a feedback oscillator.

Chapter 4 – Operational Amplifiers – Part 1

Department of CNET Electronic Circuit II

Electronic Circuit-II

10k 20k Vin Vout H3 What is the gain?

MALVINO Electronic PRINCIPLES SIXTH EDITION.

Presentation transcript:

Electronic Circuit-II Chapter 3

Topics in the Chapter 3 Feed Back of OPAMP. Importance of feedback. Inverting feedback. formula for gain, calculation of gain & problems Noninverting feedback, problems. How gain can be controlled using Feedback. Effect of Feedback on OPAMP in terms of input and output impedances.

Negative Feedback Negative feedback is the process of returning a portion of the output signal to the input with a phase angle that opposes the input signal.

The advantage of negative feedback is that precise values of amplifier gain can be set. In addition, bandwidth and input and output impedances can be controlled.

Noninverting Amplifier A noninverting amplifier is a configuration in which the signal is on the noninverting input and a portion of the output is returned to the inverting input.

Circuit diagram for Noninverting OP-AMP

Noninverting Amplifier Example: Determine the gain of the noninverting amplifier shown. Solution: = 25.8

Inverting Amplifier An inverting amplifier is a configuration in which the noninverting input is grounded and the signal is applied through a resistor to the inverting input.

0 V (virtual ground)

Determine the gain of the inverting amplifier shown. Example: Determine the gain of the inverting amplifier shown. Solution: = -24.8 The minus sign indicates inversion.

Noninverting amplifier: Impedances Noninverting amplifier: Generally, assumed to be ∞ Generally, assumed to be 0 Inverting amplifier: Generally, assumed to be Ri Generally, assumed to be 0 Note that the output impedance has the same form for both amplifiers.

Quiz 6. The input impedance of a noninverting amplifier is a. nearly 0 ohms b. approximately equal to Ri c. approximately equal to Rf d. extremely large

Quiz 7. The noninverting amplifier has a gain of 11. Assume that Vin = 1.0 V. The approximate value of Vf is a. 0 V b. 100 mV c. 1.0 V d. 11 V

Quiz 8. The inverting amplifier has a gain of -10. Assume that Vin = 1.0 V. The approximate value of the voltage at the inverting terminal of the op-amp is a. 0 V b. 100 mV c. 1.0 V d. 10 V

Quiz 9. To compensate for bias current, the value of Rc should be equal to a. Ri b. Rf c. Ri||Rf d. Ri + Rf

Quiz 10. Given a noninverting amplifier with a gain of 10 and a gain-bandwidth product of 1.0 MHz, the expected high critical frequency is a. 100 Hz b. 1.0 kHz c. 10 kHz d. 100 kHz

Quiz 10. Given a noninverting amplifier with a gain of 10 and a gain-bandwidth product of 1.0 MHz, the expected high critical frequency is a. 100 Hz b. 1.0 kHz c. 10 kHz d. 100 kHz

Quiz Answers: 6. d 7. c 8. a 9. c 10. d