ABOUT THE COURSE
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.
Important For Certification/Credit Transfer:
Typical 1st and 2nd year EE curriculum. Specific pre-requisite courses are:
1. Basic Electrical Circuits
(e.g. http://nptel.ac.in/courses/117106108/ )
2. Networks and Systems
(e.g. http://nptel.ac.in/courses/108106075/)
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 |