Electronic Devices and Circuit Theory

Slides:



Advertisements
Similar presentations
Chapter 14 Feedback and Oscillator Circuits
Advertisements

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.
Operational Amplifier
CHAPTER 3: SPECIAL PURPOSE OP-AMP CIRCUITS
Chapter 3. Amplifiers and Signal Processing John G. Webster
Electronic Devices Ninth Edition Floyd Chapter 10.
CHAPTER 8 Operational Amplifiers (OP-AMP) Introduction to Electronics Ref: Electronic Devices and Circuit Theory Boylestad.
CHAPTER 3 Measurement Systems with Electrical Signals
Operational Amplifiers
Second Order Active Filters Based on Bridged-T Networks
Common-Base vs. Common-Emitter
Lecture 91 Loop Analysis (3.2) Circuits with Op-Amps (3.3) Prof. Phillips February 19, 2003.
Review of Linear Op-Amp Circuits We will quickly review the analysis & design of linear op-amp circuits that use negative feedback: Non-inverting amplifier.
Op Amps Lecture 30.
1 More on Op Amps Discussion D Ideal Op Amp 1) The open-loop gain, A v, is infinite. 2) The current into the inputs are zero.
ECE 2006 Chapter 5: Operational Amplifiers. Differential Amplifier Not Practical Prior to IC Fabrication 2 Inputs, Output is A v *(V 1 - V 2 )
1 ECE 3336 Introduction to Circuits & Electronics MORE on Operational Amplifiers Spring 2015, TUE&TH 5:30-7:00 pm Dr. Wanda Wosik Set #14.
Chapter 13: Operational Amplifiers
Chapter 10: Operational Amplifiers. Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electronic Devices.
Prof. Yasser Mostafa Kadah – BASIC ELECTRONICS PART 4: OPERATIONAL AMPLIFIER.
ME 6405 Operational Amplifiers 10/2/12
Measurement and Instrumentation Dr. Tayab Din Memon Assistant Professor Dept of Electronic Engineering, MUET, Jamshoro. ACTIVE FILTERS and its applications.
Lecture no 2 to 5 THE BASIC BJT AMPLIFIER CONFIGURATIONS
Frequency Characteristics of AC Circuits
IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS
ECE 340 ELECTRONICS I OPERATIONAL AMPLIFIERS. OPERATIONAL AMPLIFIER THEORY OF OPERATION CHARACTERISTICS CONFIGURATIONS.
Tone Control (Filters).
Inverting Amplifier. Introduction An inverting amplifier is a type of electrical circuit that reverses the flow of current passing through it. This reversal.
Differential Amplifier
Chapter 11 Op-Amp Applications. Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electronic Devices.
Robert Boylestad Digital Electronics Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Chapter 14: Op-Amp.
Chapter 14: Operational Amplifiers. Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electronic Devices.
© 2012 Pearson Education. Upper Saddle River, NJ, All rights reserved. Electronic Devices, 9th edition Thomas L. Floyd Electronic Devices Ninth.
Operational Amplifier
ECE 4991 Electrical and Electronic Circuits Chapter 8.
Operational Amplifiers Instructor: Chia-Ming Tsai Electronics Engineering National Chiao Tung University Hsinchu, Taiwan, R.O.C.
What is an Op Amp? Ideal Op Amps Applications Examples Lecture 9. Op Amps I 1.
Electronic Devices and Circuit Theory
EE 1270 Introduction to Electric Circuits Suketu Naik 0 EE 1270: Introduction to Electric Circuits Lecture 13: Operational Amplifiers Part 1 Chapter 5.
An understanding of the complex circuitry within the op amp is not necessary to use this amplifying circuit in the construction of an amplifier.
Passive filters Use Passive components (R, L, C) Does not provide gain
Lecture 4: Electrical Circuits
Operational Amplifiers The operational amplifier, also know as an op amp, is essentially a voltage amplifier with an extremely high voltage gain. One of.
Non - Inverting Amplifier
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.
Impedance Matching Units. Maximum Power Transfer Theorem As we have seen previously the output of a power amplifier must transfer as much power as possible.
1 9. Design of Multiple-input Op. Amp. Circuits 9.1Operational AmplifiersOperational Amplifiers 9.2Basic Operational Amplifier CircuitsBasic Operational.
OP-AMPs Op Amp is short for operational amplifier. An operational amplifier is modeled as a voltage controlled voltage source. An operational amplifier.
Differential voltage-gain device that amplifies the difference between the voltages existing at its two input terminal. An instrumentation (or instrumentational)
The Working Theory of an RC Coupled Amplifier in Electronics.
ELECTRIC CIRCUITS EIGHTH EDITION
Operational Amplifiers Chapter 10 Boylestad Electronic Devices and Circuit Theory.
Ch7 Operational Amplifiers and Op Amp Circuits
BIOPOTENTIAL AMPLIFIERS
Operational Amplifiers
BIOELECTRONICS 1 Lec 9: Op Amp Applications By
Chapter 10: Operational Amplifiers
ECE 3302 Fundamentals of Electrical Engineering
Electronic Devices Ninth Edition Floyd Chapter 12.
Examples of Negative Feedback Applications: A) Inverting Amplifiers
Feedback and Oscillator Circuits
Operational Amplifiers (Op Amps) in Chemical Instrumentation
Electronic Circuit-II
Analog Electronic Circuits 1
Digital Control Systems Waseem Gulsher
Operational Amplifiers in Chemical Instrumentation
IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS
8.4 Advanced RC Filters high pass filter including gain and Bode plots
Electronic Circuit-II
Presentation transcript:

Electronic Devices and Circuit Theory Boylestad Op-Amp Applications Chapter 11

Common Op-Amp Applications Ch.11 Summary Common Op-Amp Applications Constant-gain amplifier Voltage summing Voltage buffer Controlled sources Instrumentation circuits Active filters

Constant-Gain Amplifier Ch.11 Summary Constant-Gain Amplifier Inverting amplifier

Constant-Gain Amplifier Ch.11 Summary Constant-Gain Amplifier Noninverting amplifier Noninverting amplifier

Multiple-Stage Gains Ch.11 Summary The total gain (3-stages) is given by: or:

Voltage Summing Ch.11 Summary The output is the sum of individual signals times the gain:

Voltage Buffer Ch.11 Summary Any amplifier with no gain or loss is called a unity gain amplifier. The advantages of using a unity gain amplifier: Very high input impedance Very low output impedance The unity gain amplifier shown is commonly referred to as a voltage buffer or a voltage follower.

Controlled Sources Ch.11 Summary Voltage-controlled voltage source Voltage-controlled current source Current-controlled voltage source Current-controlled current source

Voltage-Controlled Voltage Source Noninverting Amplifier Version Ch.11 Summary Voltage-Controlled Voltage Source The output voltage equals the gain times the input voltage. Noninverting Amplifier Version What makes an op-amp different from other amplifiers is that its impedance characteristics and gain calculations depend solely on external resistors.

Voltage-Controlled Voltage Source Inverting Amplifier Version Ch.11 Summary Voltage-Controlled Voltage Source The output voltage equals the gain times the input voltage. Inverting Amplifier Version Like the noninverting amplifier configuration, its impedance characteristics and gain calculations depend solely on external resistors.

Voltage-Controlled Current Source Ch.11 Summary Voltage-Controlled Current Source The output current is:

Current-Controlled Voltage Source Ch.11 Summary Current-Controlled Voltage Source This is simply another way of applying the op-amp operation. Whether the input is a current determined by Vin/R1 or as I1: or

Current-Controlled Current Source Ch.11 Summary Current-Controlled Current Source This circuit may appear more complicated than the others but it is really the same thing.

Instrumentation Circuits Ch.11 Summary Instrumentation Circuits Some examples of instrumentation circuits using op-amps: Display driver Instrumentation amplifier

Ch.11 Summary Display Driver

Instrumentation Amplifier Ch.11 Summary Instrumentation Amplifier For all resistors at the same value (except Rp):

Active Filters Ch.11 Summary Low-pass filter High-pass filter Adding capacitors to op-amp circuits provides external control of the cutoff frequencies. The op-amp active filter has controllable cutoff frequencies and controllable gain. Low-pass filter High-pass filter Bandpass filter

Low-Pass Filter, First-Order Ch.11 Summary Low-Pass Filter, First-Order The upper cutoff frequency and voltage gain are given by:

Low-Pass Filter, Second-Order Ch.11 Summary Low-Pass Filter, Second-Order The roll-off can be made steeper by adding more RC networks.

Ch.11 Summary High-Pass Filter The cutoff frequency is determined by:

Bandpass Filter Ch.11 Summary There are two cutoff frequencies: upper and lower. They can be calculated using the same low-pass cutoff and high-pass cutoff frequency formulas in the appropriate sections.