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h03_lecture2_2

h03_lecture2_2 - Lecture 2 Common Source Amplifier...

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EE 214 Lecture 2 (HO#3) B. Murmann 1 Lecture 2 Common Source Amplifier Small-Signal Model Boris Murmann Stanford University [email protected] Copyright © 2004 by Boris Murmann EE 214 Lecture 2 (HO#3) B. Murmann 2 Overview Reading 3.0 (Amplifier basics), 3.1 (Model selection) 3.2.2 (Common source amplifer) 1.6.0 ... 1.6.5 (Small signal MOS model) Introduction In this lecture, we will use the simple long channel MOS model to construct our first amplifier - a common source stage. Looking at its transfer function, we'll find that treating signals as "small" with respect to the bias conditions allows us to linearize the circuit. Next, we generalize this approach and develop a more universal"small signal model" for MOS devices that are biased in the forward active region.
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