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**Chapter 2 – Operational Amplifiers**

Introduction Textbook CD

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The OP-AMP Terminals Symbol Power Supplies Exercise 2.1

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**The Ideal OP-AMP _ Open-loop gain Exercise 2.2 i(-) Inverting RO vid A**

-VS vid Inverting Noninverting Output + _ i(-) i(+) vO = Advid RO A Ri Open-loop gain Exercise 2.2

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**Analysis of Circuits Containing Ideal OP-AMPS **

The Inverting Configuration Closed-Loop Gain Virtual Short-Circuit Virtual Ground Negative and Positive Feedback The inverting closed-loop configuration.

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**Analysis of Circuits Containing Ideal OP-AMPS The Closed-Loop Gain**

Analysis of the inverting configuration

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**Analysis of Circuits Containing Ideal OP-AMPS**

Effect of Finite Open-Loop Gain

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**Analysis of Circuits Containing Ideal OP-AMPS**

Example 2.1

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**Analysis of Circuits Containing Ideal OP-AMPS**

Input and Output Resistances

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**Analysis of Circuits Containing Ideal OP-AMPS**

Example 2.2

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**Analysis of Circuits Containing Ideal OP-AMPS**

Exercises

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**Other Applications of the Inverting Configuration**

With General Impedances

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**Other Applications of the Inverting Configuration**

Example 2.3

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**A difference amplifier.**

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**Applications of superposition to the analysis of the current circuit of Fig.. 2.21.**

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**Finding the input resistance of the difference amplifier.**

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Representation of the common-mode and differential components of the input signal to a difference amplifier. Note that v1 = vCM - vd/2 and v2 = vCM + vd/2.

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**(a) A popular circuit for an instrumentation amplifier**

(a) A popular circuit for an instrumentation amplifier. (b) Analysis of the circuit in (a) assuming ideal op-amps. (c) To make the gain variable, R1 is implemented as the series combination of a fixed resister R1f and a variable resistor R1v. Resistor R1f ensures that the maximum available gain is limited.

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**Open-loop gain of a typical general-purpose internally compensated op amp.**

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**(a) Unity-gain follower. (b) Input step waveform**

(a) Unity-gain follower. (b) Input step waveform. (c) Linearly rising output waveform obtained when the amplifier is slew-rate 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.

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**Effect of slew-rate limiting on output sinusoidal waveforms.**

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