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lecture10

# lecture10 - Lecture#10(with Prof Neureuther OUTLINE...

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Lecture 10, Slide 1 EECS40, Fall 2003 Prof. King Lecture #10 OUTLINE Inverting-amplifier circuit Summing-amplifier circuit Noninverting-amplifier circuit Difference-amplifier circuit Reading Chapter 5.3-5.7 (with Prof. Neureuther) Lecture 10, Slide 2 EECS40, Fall 2003 Prof. King • Negative feedback is used to “linearize” a high-gain differential amplifier. V 0 + V + V V 0 (V) 5 μV 50 5 + V V 5 10 A = Without feedback V 0 + V IN 5 10 A = V IN 1 2 3 V 0 1 2 3 4 5 4 5 Review: Negative Feedback With feedback

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Lecture 10, Slide 3 EECS40, Fall 2003 Prof. King Inverting Amplifier Circuit + + v o + v s R s R f i n i n = 0 Î i s = - i f v p = 0 Î v n = 0 + v p + v n i s i f s s f o v R R v = Lecture 10, Slide 4 EECS40, Fall 2003 Prof. King Analysis using Realistic Op Amp Model In the analysis on the previous slide, the op amp was assumed to be ideal, i.e. R i = ; A = ; R o = 0 In reality, an op amp has finite R i , finite A , non- zero R o , and usually is loaded at its output terminals with a load resistance R L . It can be shown that s f o i s L o L o i o f s f o o v R
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lecture10 - Lecture#10(with Prof Neureuther OUTLINE...

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