Analog Circuits

By Prof. Nagendra Krishnapura | IIT Madras

Learners enrolled: 5777

This course is an introduction to amplifiers using transistors. Students will be introduced to MOS transistors, their characteristics, techniques for biasing them, and amplifiers using them. The basic transistor amplifier stages are seen as realizations of different controlled sources using negative feedback. Small- and large-signal characteristics of each amplifier will be discussed. At the end of this course, students should be able to recognize and analyze the basic amplifiers and biasing arrangements using MOS transistors.

INTENDED AUDIENCE : Any Interested Learners

PREREQUISITES :
1. Basic Electrical Circuits

(e.g. http://nptel.ac.in/courses/117106108/ )

2. Networks and Systems

(e.g. http://nptel.ac.in/courses/108106075/)

INDUSTRY SUPPORT : NIL

Summary

Course Status :	Completed
Course Type :	Core
Duration :	12 weeks
Category :	Electrical, Electronics and Communications Engineering
Credit Points :	3
Level :	Undergraduate
Start Date :	27 Jan 2020
End Date :	17 Apr 2020
Enrollment Ends :	03 Feb 2020
Exam Date :	25 Apr 2020 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week	Unit contents
1	Course introduction; Need for nonlinear circuits; Incremental analysis of nonlinear circuits; Diode and its models; Incremental picture of a two port nonlinear circuit
2	Constraints on y-parameters and large signal characteristics to obtain a high gain; MOS transistor and its characteristics; AC coupling network to add signal to bias; AC coupling at input and output; Common source amplifier
3	Output conductance of a MOS transistor; Inherent gain limitation of a transistor; Sensitivity of gm to transistor parameters; Biasing a transistor at a constant current; Drain feedback configuration; Current mirror
4	Common source amplifier using drain feedback; Common source amplifier using current mirror bias
5	Common source amplifier using source feedback bias; Using a resistor instead of a current source for biasing; Further biasing techniques; VCVS using a transistor; Source follower biasing
6	CCVS using a transistor; CCVS using an opamp; Biasing a CCVS; Emitter degenerated amplifier
7	Common gate amplifier and its biasing; VCCS using a transistor and its biasing
8	pMOS transistor and its small signal model; Biasing a pMOS transistor; Converting nMOS circuits to pMOS; Amplifiers using a pMOS transistor
9	CS amplifier with active load; CMOS inverter
10	Differential pair with current mirror load; Single stage opamp
11	Two stage opamp; Compensation; Opamp models
12	Bipolar junction transistor-large and small signal models; BJT circuits- Biasing; Common source amplifier; Emitter follower

Books and references

NIL

Instructor bio

Prof. Nagendra Krishnapura

IIT Madras

Nagendra Krishnapura is an associate professor in the VLSI group of the department of Electrical Engineering of the Indian Institute of Technology, Madras. He works in the area of analog and mixed-signal integrated circuits and signal processing.

He graduated with a Ph.D. from Columbia University, New York in Oct. 2000. He obtained his B. Tech. degree in Electronics and Communications Engineering from the Indian Institute of Technology, Madras, in 1996. Between 2000 and 2005, he worked as a senior design engineer at Celight, Inc. and Multilink(later Vitesse Semiconductor) where he designed integrated circuits for high speed communications. From 2003 to 2005, he was an Adjunct Assistant Professor and taught courses on Analog Circuit Design at Columbia University.

Course certificate

• The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
• The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
• Date and Time of Exams: 25th April 2020, Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
• Registration url: Announcements will be made when the registration form is open for registrations.
• The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
• Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE:
• Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
• Exam score = 75% of the proctored certification exam score out of 100
• Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75.
• If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
• Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras. It will be e-verifiable at nptel.ac.in/noc.
• Only the e-certificate will be made available. Hard copies will not be dispatched.

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