S08_Lecture08 - Lecture 8 ECE 324 Electronics II Doug Looze...

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February 19, 2008 Electronics II ©2008 Douglas Looze 1 Lecture 8 ECE 324 Electronics II Doug Looze
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February 19, 2008 Electronics II ©2008 Douglas Looze 2 Announcements Homework 2 available Due Monday, March 3 Project 1 available on course website Prelab next Tuesday @ 2:30 PM Lab Tuesday or Wednesday
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February 19, 2008 Electronics II ©2008 Douglas Looze 3 Bias current Q 8 , Q 5 Differential pair Q 1 , Q 2 Active load Q 3 , Q 4 – CS 2 nd stage Q 7 • Bias current Q 7 C c enhances stability Last Time 2-stage CMOS Amplifier
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February 19, 2008 Electronics II ©2008 Douglas Looze 4 Differential mode voltage gain ( 29 ( 29 1 6 02 04 06 07 v m m A g g r r r r = Common mode voltage gain ( 29 1 3 02 04 5 CMRR m m o g g r r r = Frequency response ( 29 ( 29 ( 29 1 6 2 04 6 7 2 1 2 1 2 1 1 1 m m c o o o v P P P P g g sC r r r r A s s ϖ ϖ ϖ - = + + + ( 29 ( 29 1 2 04 6 7 6 1 P o o o C m r r r r C g 2245 6 2 2 m P g C 2245
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February 19, 2008 Electronics II ©2008 Douglas Looze 5 10 -2 0 2 4 Magnitude (abs) 2 3 4 5 6 7 8 9 -270 -180 -90 0 Phase (deg) Bode D iagram Frequency (Hz) Frequency response: gain, phase Truth Approximation
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February 19, 2008 Electronics II ©2008 Douglas Looze 6 Today Output stages Reading S&S 14.1-14.4
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This note was uploaded on 04/16/2008 for the course ECE 324 taught by Professor Looze during the Spring '08 term at UMass (Amherst).

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S08_Lecture08 - Lecture 8 ECE 324 Electronics II Doug Looze...

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