ECE 4220 Analog Integrated Circuit Design | ECE | Virginia Tech

Undergraduate PROGRAMS

Course Information


Integrated circuit design in silicon bipolar, MOS, and BiCMOS technologies for communications, sensor, instrumentation, data conversion, and power managment applications. Models for integrated circuit active devices in bipolar and MOS technologies; noise; current mirrors, active loads and references; amplifiers and output stages; operational amplifiers; and an introduction to data conversion circuits. Circuit design at the IC level; modern VLSI CAD software.

Why take this course?

Analog signals are ubiquitous throughout the physical world. Analog circuits are therefore required to detect, amplify, manipulate, and process such signals. For example, analog circuits are required to interface with sensors/transducers [including microelectromechanical (MEMS) devices], converting physical responses, such as temperature, airflow, vibration, acceleration, stress, into electrical signals, amplifying these signals, and finally digitizing and communicating the resulting information to the electronic world. Analog circuits are required in the low-frequency/baseband sections of wireline and wireless communications transceivers. Analog circuits also form the core of many power management and control systems. Such analog circuits are now overwhelmingly realized as large-scale and very-large-scale integrated circuits, and these integrated circuits increasingly contain both analog and digital functions (i.e. mixed-signal) rapidly approaching system-on-a-chip implementations.


C- or better in 3204

This course requires ECE 3204 as a prerequisite. This course builds on knowledge of amplifier analysis, feedback, transistor small signal models, frequency response, and operational amplifiers gained from successful completion of ECE 3204.

Major Measurable Learning Objectives

  • describe the models for active devices in MOS and Bipolar IC technologies,
  • describe layout considerations for active and passive devices in analog ICs,
  • analyze and design single-ended and differential IC amplifiers,
  • analyze and design IC current sources and voltage references,
  • describe the noise sources and models applicable to ICs,
  • analyze integrated circuit noise performance,
  • analyze and design IC operational amplifiers,
  • describe the operation of comparators and sample-and-hold circuits,
  • describe the operation of commonly used data conversion circuits, and
  • design, simulate, lay out, and verify analog integrated circuit designs using a commercial CAD environment.

Course Topics


Percentage of Course

Review of models for active devices in Bipolar and MOS technologies 5%
Process technologies, passive components, and analog layout considerations 10%
Review of basic single-stage amplifiers 5 %
Differential pairs 10%
Current mirrors, active loads, and references 15 %
Noise sources and noise analysis in integrated circuits 10%
Output stages 10 %
MOS and bipolar operational amplifiers 20%
Comparators 5%
Sample-and-hold circuits 5%
Introduction to A/D conversion circuits 5%