Lecture 0

Course Overview

ES 330 Electronics I

• Course description: Theory, characteristics and operation of MOSFET transistors, elementary amplifier stages, differential amplifier, half-circuit analysis, common mode analysis, study of current mirror, active load design

• When: – TTH 10:45-12:00 (Lectures)– T 1-3:40 (Lab, ES231)

• Classroom: – Salazar Hall 2009A (Lecture, ES230)– Sal 2005 (Lab, ES231)

Course Webpage

Instructor Availability

• Instructor: Dr. Jack Ou• Office: Salazar 2010B• Office hours:–MW 10:30-11:00, TH 3:00 to 4:00

• Email: jack.ou@sonoma.edu– I like to communicate over email.– I do not check my voice mail.

• Do not overlook the opportunity to meet with the instructor.

Prerequisite: Electric Circuits (ES220)• Concepts from ES220– Ohm’s law– Series/parallel circuit– Voltage/current divider– Nodal analysis–Mesh analysis– Dependent sources– Thevenin and Norton Equivalent Circuit– AC analysis

Prerequisite: Physics 214

Need to tie substrate to GNDto avoid current through PN diode.

Positive charges repel the holescreating a depletion region, a region free of holes.

Free electrons appear at VG=VTH.

VTH=300mV to 500 mV(OFF) (ON)

Lessons from Electronics I• Diode

– Device Physics

–Circuit Design • Bipolar junction transistor

– Device Physics

– Circuit Design

• Complementary Metal Oxide Semiconductor– Device Physics (STOPPED HERE!)

– Circuit Design (NAND Gate)

BJT & MOS Transistor

[Chapter 4,5]

[Chapter 6,7]

Analogous Devices

• Terminals– “C”↔”D”– “E” ↔”S”– “B” ↔”G”

• Analogous Devices– NPN ↔NMOS– PNP ↔PMOS

Equivalent Circuit

Small Signal Model

(NPN) (PNP)

Statements that are always true for both NPN and PNP.1. rπ is between B and E. 2. the direction of the dependent current source always pointsfrom the collector to emitter.3. ro is always between B and C.

Small Signal Analysis

1. Replace each ideal DC voltage source with a small signal ground.

2. Replace each ideal DC current source with an open circuit.

3. Replace each transistor by its small signal model4. Analyze the small signal equivalent circuit.

Voltage Source

Replace the DC voltage Source with a short to ground.

RS should be ~0 for a good battery!

Current SourceRS should be infinity for a good current source!

Terminal Resistance of a BJT

Eq. 5.162 Eq. 5.198 Eq. 5.291

Formula to Memorize

 

NPN to NMOS

Topics Covered in ES330

• Review the elementary amplifier configurations– Common source– Common drain– Common gate

• Build slightly more advanced circuits with elementary stages

Circuits from Chapter 9

Cascode amplifier Current mirror

Circuits from Chapter 10

Differential amplifier Differential amplifier + Current Mirror

Chapter 11

High Frequency Model of a Transistor

Small Signal Equivalent Model at High Frequency (If time permits)

(Transmission Zero)

Application Example

Schematic of the EKG

Textbook

• Required Text: Behzad Razavi, “Fundamentals of Microelectronics”, Wiley, 1st edition. (ISBN-13: 978-0-471-47846-1)

• Reminder: ES330 is a 2-unit course requiring an average of 6-8 hours of study per week!

Course Policies

• Regarding classroom conduct• Regarding homework, exams and

Piazza

Grading

• Three exams – (total: 40 %. Exam #1=20 %, final=20 %)

• Class participation – (total: 10 %. Attendance=5%, participate in active learning

exercises both in class and out of class=5%)

• Supplemental assignments – (total: 5 %. Supplemental assignments consist of videos,

articles, and other forms of exercises design to stimulate students’ interest in semiconductor industry)

• Homework assignment: – 25 %

• Project– 20%

Classroom Participation

• Examples of exercises– You are given a blank sheet of paper,

and asked to respond a brief question. You will not be graded.

– You maybe asked to present the solution you have worked on in class.

– You maybe asked to summarized other students’ response

– You maybe asked to complete anonymous survey about the course

Supplemental Assignment• Focus– History of Silicon valley– Engineers’ reflection of their career– Talks given by some interesting

characters

• Format: video/articles

Homework

• 20 % of the final grade– Problems in each assignment are graded

selectively. – Effort based.– Each assignment can take on an average six

hours to complete– Please start your assignment early. Do not

wait till the last minute– Post your questions on Piazza

Homework Tips

• Try to attack the problems from different angles– Ask the what if questions

• Summarize the question in your own words.• “I am stuck because …..”• “This problem frustrates me because….”• “Here is what I do not understand…..”• “Here is what I know about this problem….”• Be self-critical. Be suspicious of assumptions that

you considered to be true.• Be disciplined. If you are truly stuck, move on

and come back to work on the question.

Helpful practices for better grades

• Before class– Download the lecture notes from the website and review

them– Make a list of questions that you want to ask– Make use of instructor’s office hour

• In class– Stay awake and listen actively– Participate in exercises– Take notes. Make a mental list on what is confusing to you.

• After class– Set aside a time to study.– Review the notes . Use the textbook as a reference.– Do assignments/homework before the deadline– Post questions on Piazza

Important Dates

• 9/3 last day to drop a course with adjusted fees (done on-line)

• 9/4-15: drop with a “W” (done on-line)

• 9/16-11/13: petition to withdraw from a class with $20 administrative fee (dropping classes permitted because of serious and compelling reasons)