multistageamp - MultistageAmplifiers ECE412

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Adaptive Integrated Microsystems Multi-stage Amplifiers ECE 412 Introduction to mixed-signal circuits (Fall 2007) Class website: http://www.egr.msu.edu/classes/ece412/shantanu
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Adaptive Integrated Microsystems Analysis of amplifiers - Identify all the current mirrors - Replace current mirrors by non-ideal current sources/sink. - Identify the input stage of the amplifier which will determine the incremental change in current. - Calculate the impedance seen at the output terminal of the amplifier. out m v R G A = Effect of the input stage Effect of the output impedance
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Adaptive Integrated Microsystems Single to multi-stage amplifiers dd V in V out V 1 Q 2 Q dd V 3 Q Gain ) || ( 2 1 1 ds ds m in out v r r g V V A - = = dd V 2 Q B V in V out V s V 1 Q 6 Q dd V 5 Q 3 Q 4 Q ) || ( 6 3 3 2 1 2 1 ds ds m ds ds m m v r r g r r g g A - =
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Adaptive Integrated Microsystems Single to multi-stage amplifiers Gain ) || ( 2 1 1 ds ds m in in out v r r g V V V A - = - = - + 1 Q 2 Q - in V + in V b I 2 s V dd V dd V 3 Q 4 Q out V dd V 5 Q 6 Q 1 Q 2 Q - in V + in V b I s V dd V dd V 3 Q 4 Q + out V dd V 6 Q 7 Q dd V 9 Q 5 Q - out V 8 Q ) || ( 1 4 1 ds ds m in in out out v r r g V V V V A - = - - = - + - +
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Adaptive Integrated Microsystems Single to multi-stage amplifiers Gain ) || ( 2 1 1 ds ds m in in out v r r g V V V A - = - = - + 1 Q 2 Q - in V + in V b I 2 s V dd V dd V 3 Q out V dd V 5 Q 6 Q dd V 7 Q dd V 9 Q 8 Q 10 Q 4 Q 1 Q 2 Q - in V + in V b I 2 s V dd V dd V 3 Q out V dd V 5 Q 6 Q dd V 7 Q dd V 9 Q 8 Q 10 Q 4 Q 1 B V 2 B V
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This note was uploaded on 03/01/2010 for the course ECE 412 taught by Professor - during the Fall '08 term at Michigan State University.

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multistageamp - MultistageAmplifiers ECE412

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