Chapter 2 – Operational Amplifiers. Introduction. http://engr.calvin.edu/PRibeiro_WEBPAGE/courses/engr311/Handouts/OpAmptutorial1.ppt Textbook CD http://www.clarkson.edu/%7Esvoboda/eta/designLab/InvertingAmplifierDesign.html. The OPAMP Terminals. Symbol Power Supplies.
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Chapter 2 – Operational Amplifiers
Introduction
http://engr.calvin.edu/PRibeiro_WEBPAGE/courses/engr311/Handouts/OpAmptutorial1.ppt
Textbook CD
http://www.clarkson.edu/%7Esvoboda/eta/designLab/InvertingAmplifierDesign.html
i()
Inverting
RO
A
vid
Output
Ri
vO = Advid
Noninverting
i(+)
+
VS
The Ideal OPAMP
Openloop gain
Exercise 2.2
Analysis of Circuits Containing Ideal OPAMPS
The Inverting Configuration
ClosedLoop Gain
Virtual ShortCircuit
Virtual Ground
Negative and Positive Feedback
The inverting closedloop configuration.
Analysis of Circuits Containing Ideal OPAMPS
The ClosedLoop Gain

Analysis of the inverting configuration
Analysis of Circuits Containing Ideal OPAMPS
Effect of Finite OpenLoop Gain
Analysis of Circuits Containing Ideal OPAMPS
Exercise 2.1
Analysis of Circuits Containing Ideal OPAMPS
Input and Output Resistances
Analysis of Circuits Containing Ideal OPAMPS
Exercise 2.2
Other Applications of the Inverting Configuration
The Integrator
Other Applications of the Inverting Configuration
PSpice Simulation Tips
Other Applications of the Inverting Configuration
The Weighted Summer
Other Applications of the Inverting Configuration
The Voltage Follower
Other Applications of the Inverting Configuration
The Difference Amplifier
Applications of superposition to the analysis of the current circuit of Fig.. 2.21.
Other Applications of the Inverting Configuration
The Difference Amplifier – Input Resistances
Finding the input resistance of the difference amplifier.
Other Applications of the Inverting Configuration
The Difference Amplifier – CommonMode and Differential
Components of the input signal
Representation of the commonmode and differential components of the input signal to a difference amplifier. Note that v1 = vCM  vd/2 and v2 = vCM + vd/2.
Other Applications of the Inverting Configuration
Instrumentation Amplifier
(a) A popular circuit for an instrumentation amplifier. (b) Analysis of the circuit in (a) assuming ideal opamps. (c) To make the gain variable, R1 is implemented as the series combination of a fixed resister R1fand a variable resistor R1v. Resistor R1fensures that the maximum available gain is limited.
Effect Of Finite OpenLoop Gain and Bandwidth On Circuit Performance
Openloop gain of a typical generalpurpose internally compensated op amp.
fb = 3db or break frequency
ft = unity gain bandwidth
(a) Unitygain follower. (b) Input step waveform. (c) Linearly rising output waveform obtained when the amplifier is slewrate limited. (d) Exponentially rising output waveform obtained when V is sufficiently small so that the initial slope (wtV) is smaller then or equal to SR.