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EE 330 Lect 35 Fall 2011

EE 330 Lect 35 Fall 2011 - EE 330 Lecture 35 Current Source...

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EE 330 Lecture 35 Current Source Biasing Current Sources and Mirrors Differential Amplifiers
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Differential amplifier Q 1 V in1 -V EE R C1 Q 2 R C1 V DD I EE V OUT1 A E1 =A E2 V in2 V OUT2 1 1 1 1 2 2 C m OUT IN IN R g V V V 1 1 2 1 2 2 C m OUT IN IN R g V V V Very useful circuit This is a basic Op Amp Review from Last Lecture
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Model of Current Source V 1 I 1 Current Source LARGE SIGNAL S R XX I V 1 i 1 Current Source SMALL SIGNAL IN R “Reasonable Current Source” I XX independent of V 1 and R S large Small-signal model of current source want R IN large Ideal Current Source V 1 I 1 Current Source LARGE SIGNAL XX I V 1 i 1 Current Source SMALL SIGNAL I XX independent of V 1 IN R = Review from Last Lecture
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