Lecture26 - Chapter 5

Lecture26 - Chapter 5 - EE216 C ircuit Analysis I Le cture#...

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1 EE216 Circuit Analysis I Lecture # 26 – Chapter 5
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OP-Amp Constraints Review Recall OP-Amp is a special type of Voltage Amplifier with real constraints : R in ~ 10 M (very large) R out ~ 100 ohms (very small) Gain = A ~ 10 5 (very large) For an ideal OP-Amp with ideal constraints : R in ~ R out ~ 0 A ~ i p = i n = 0 For an ideal OP-Amp operating in linear region : v p = v n
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3 Ongoing Assignment # 5 1. In the circuit of figure P2, find: V 1 , V 0 , and I 1 , I 2 . Calculate the largest values of the feedback resistors which can be used without saturating the OPAMPS. 3 1 mA 4 4 6 10 5 mA + _ + + _ _ V 0 - 9 v + 9 v + 15 v - 15 v + _ V 1 I 2 I 1 Figure P 2
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Problem 3 - Solution 0 4 4 1 = + - a a v I v 2 1 a v I = 0 10 5 6 2 = + - - o o v I v 5 10 6 2 - + = o o v v I mA I mA I V v V v V v o a 4 . 3 , 2 , 6 , 4 , 3 2 1 1 - = - = = - = =
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The Inverting Amplifier 1/4
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The Inverting Amplifier 2/4 Actual Gain of Inv. Amp =v o /v s = ? Apply node voltage method @
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Lecture26 - Chapter 5 - EE216 C ircuit Analysis I Le cture#...

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