DORDT COLLEGE ENGINEERING DEPARTMENT
EGR 323 — ELECTRONICS II
Spring 2021

DAILY NOTES

Click on a date to download the notes for that day.
Click on a "V" to stream the video for that day.
M = Monday, W = Wednesday, F = Friday


DATE TOPICS
M
W
F		  
 
1/15		  
 
 		  
 
 Intro to the course, Review Ch 1 and 2.   (First day of class.)
M
W
F		 1/18
1/20
1/22		  V
 V
 V		  Review Ch 3, 5, 6, 7
 Ch 8 Intro, MOSFET current mirrors.
 Discussed three-"isms", Problem 7.120
M
W
F		 1/25
1/27
1/29		  V
 V
 V		  BJT Current Mirrors, Base current compensation, Basic gain cell
 Problems 8.2, 8.6; Basic gain cell, active load, shield ro from vo
 Finding Rin and RO for CG amp, also for CG with source degeneration
M
W
F		 2/01
2/03
2/05		  V
 V
 V		  Body Effect for CG, CB amps, Rin, Rout, Avo, of CS, Adv. of Cascode
 Probs. 8.50, 8.70, var. on Cascode, Wilson, Widelar, Darlington, Sziklai
 Probs. 8.72, 8.29, 8.50, 8.55, 8.70, Ch 9 Intro. Differential Amplifiers
M
W
F		 2/08
2/10
2/12		  V
 V
 V		  Source and noise models for differential signals.
 Diff. amp: Bias, VOV, dependence of id1, id2 on vid
 Diff. amp: Large signal analysis, small sig analysis, CMRR
M
W
F		 2/15
2/17
2/19		  
 V
 		  No class, reading day.
 Discussed blackouts in Texas (see video), Test on Friday, Rout loop.
 Test #1.
M
W
F		 2/22
2/24
2/26		  V
 V
 V		  Discussed chip design & innovation (see video), diff-amp DC offset
 Diff amp DC offset, BJT diff amp, input bias current, elegant variations
 Probs. 9.61, (9.28 video only), Introduction to Ch 10, Freq. Response
M
W
F		 3/01
3/03
3/05		  V
 V
 V		  Def'n Transfer Function, how to find TF via diff. Eq, via phasors
 Bode Plots: how to plot magnitude and phase of real poles and zeros
 Bode Plots: plot mag and phase of complex poles, zeros; Piano Freqs
M
W
F		 3/08
3/10
3/12		  V
 V
 V		  Review prob. F.9, Four MOSFET parasitics that limit hi freq response
 Review prob. 10.3, MOSFET, BJT hi-freq models, unity-gain frequency fT
 Review prob. 10.7, High-frequency performance of a CS amplifier
M
W
F		 3/15
3/17
3/19		  V
 V
 V		  Miller's theorem, CS and CE with low source Rsig, dominant pole
 T(s) = FL(s)AMFH(s), estimating ωH
 Open cct time constants: the theorem and application to CS, CG amps.
M
W
F		 3/22
3/24
3/26		  V
 V
 V		  High freq. response of the MOSFET cascode, intro followers
 High freq. response of followers and of differential amplifiers
 Probs 10.50, 10.72; Hi freq and degeneration, low freq. response
M
W
F		 3/29
3/31
4/02		  V
 
 V		  Ch. 11 Intro to feedback; loop gain, closed loop gain defined; 4 adv.
 Test #2.
 4 types of feedback; finding A from Aβ and β; Good Friday
M
W
F		 4/05
4/07
4/09		  V
 
 V		  Prob. 11.4; Definitions of stability, BIBO, Nyquist; poles in left half-plane
 No class, registration day
 Problem 10.89; Effect of feedback on pole location, root locus concept.
M
W
F		 4/12
4/14
4/16		  V
 V
 V		  Thoughts: Hez 11:4-5, overview PS#11, gain and phase margin
 Why 45° or 60° phase margin? Bode plots of |A(s)|   Lab report due.
 Professional societies & IEEE, life in Nigeria as a MK, Ch 12 Intro
M
W
F		 4/19
4/21
4/23		  V
 V
 V		  Circuit topologies for classes A – H, Dynamic range and eff. of class A
 Power dissipation and efficiency of class AB, biasing goals for class AB
 Prob. 11.83, methods of class AB Bias, Ch 13 Intro., pwr strg analogy
M
W
F		 4/26
4/28
4/30		  V
 V
 		  Prob. 12.41, early op-amps, CMOS op-amps
 Prob. 12.20, CMOS op-amp annotated, 741 op amp schematic
 Last day of class. "Assessment Activity" (no slides or video)