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Lecture28-Operational Amplifier

Lecture28-Operational Amplifier - Lecture 28 Lecture 28...

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Lecture 28 Operational Amplifiers Reading: Jaeger 11.1-11.5 and Notes ECE 3040 - Dr. Alan Doolittle Georgia Tech
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Operational Amplifier •Operational Amplifier or “Op-Amp” is a multistage amplifier that is used for general electrical signal manipulation general electrical signal manipulation. •The numbers of applications possible with Op-amps are two numerous to list. •Most everyone agrees: “Op-Amp analysis is significantly easier than transistor analysis.” •Though they are often internally complex, their use in circuits most often simplifies the overall design. Model •The circuit is modeled by an ideal voltage amplifier. Circuit Symbol + V + V + + V out - in - V out - in - ECE 3040 - Dr. Alan Doolittle Georgia Tech
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Ideal Operational Amplifier •R in = Infinity, •Voltage Gain, A v =Infinity at all frequencies R 0 M d l •R out =0 + + Model V out V in - - ECE 3040 - Dr. Alan Doolittle Georgia Tech
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