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EE 421 – DIGITAL ELECTRONICS
Catalog Data
An introduction to the design, layout, and simulation of digital integrated circuits.
MOSFET operation and parasitics. Digital design fundamentals including the design of
digital logic blocks.
Credits 3
Offered every Fall semester
PREREQUISITES AND/OR COREQUISITES
Prerequisite EE 320 or consent of instructor
TEXTBOOK(s)
Baker, “CMOS Circuit Design, Layout, and Simulation, Third Edition,” Wiley-IEEE
Weste and Harris, “CMOS VLSI Design: A Circuits and Systems Perspective,”
Addision-Wesley
COORDINATORS
Dr. Yahia Baghzouz
Dr. R. Jacob Baker
Dr. Yingtao Jiang
Dr. Peter Stubberud
TOPICS
Introduction to digital integrated circuit (IC) design
the digital IC design process
history of IC design
introduction to circuit simulation
Integrated circuit processing layers: the well, metal layers, active, and poly layers
layout design rules
cross-sectional views
Introduction to device physics
pn-junctions, Fermi levels, carrier concentrations, electric fields in
semiconductors
diffusion and depletion capacitances
Wiring delay and cross-talk
RC delays through a well, p- or n-active region, metal layers
Resistors, capacitors, and MOSFETs
layout (sizing and layers used) of resistors, capacitors, and MOSFETs
temperature behavior, temperature coefficients (Temp Co)
MOSFET operation
MOSFET capacitances
threshold voltage
IV characteristics of MOSFETs
SPICE modeling
operation and modeling of nanometer devices
Models for digital design
effective switching resistance
input and output capacitances
delay and transition times
using the MOSFET as a switch
The inverter
DC and switching characteristics
layout
sizing for large capacitive loads
inverter topologies, NMOS-only, inverters with tri-state outputs
Clocked circuits
the transmission gate and its applications
latches and flip-flops
layout of clocked circuits
Dynamic logic gates
charge leakage, simulating dynamic circuits, nonoverlapping clock generation
clocked CMOS logic, e.g., pre-charge evaluate, domino logic, etc.
COURSE OUTCOMES
After completing EE 420 students will be able to:
1. List the main layers used in the fabrication of a digital integrated circuit. (1.3, 1.4,
1.6, 1.7, 1.8, 1.9, and 1.10) [1,2]
2. Sketch the cross-sectional view of a layout (1.6, 1.8, 1.9, 1.10, and 1.11) [1,2]
3. Discuss the movement of electrons and holes in pn-junctions and transistors under
various operating conditions. (1.1, 1.2, 1.3, 1.6, 1.7, 1.8, 1.9, 1.10, and 1.11) [1,2]
4. Calculate delays through semiconductor materials and conducting wires. (1.1, 1.3,
1.6, 1.7, 1.8, 1.9, 1.10, and 1.11) [1,2]
5. Describe the operation of MOSFETs using equations and intuitively. (1.1, 1.2, 1.3,
1.6, 1.7, 1.8, 1.9, 1.10, and 1.11) [1,2]
6. Design, estimate delays, and determine speed bottlenecks in digital circuits. (1.1, 1.3,
1.6, 1.7, 1.8, 1.9, 1.10, and 1.11) [1,2]
7. Layout digital circuits and chips. (1.3, 1.4, 1.6, 1.7, 1.8, 1.9, 1.10, and 1.11) [1,2]
COMPUTER USAGE
Students use SPICE to create, simulate, and analyze digital integrated circuits. Cadence
or Electric VLSI are used to layout the integrated circuits.
GRADING
25% Midterm
25% Homework/Quizzes
25% Course Project (more complicated project for graduate credit, that is, ECG 621)
25% Final
ABET COURSE OUTCOMES
1. The appropriate technical knowledge and skills:
1. an ability to apply mathematics through differential and integral calculus,
2. an ability to apply advanced mathematics such as differential equations, linear
algebra,
4. an ability to apply knowledge of basic sciences,
7. an ability to apply knowledge of engineering,
8. an ability to design a system, component, or process to meet desired needs within
realistic constraints,
9. an ability to identify, formulate, and solve engineering problems,
10. an ability to analyze and design complex electrical and electronic devices,
11. an ability to use the techniques, skills, and modern engineering tools necessary for
engineering practice,
UULO COURSE OUTCOMES
1. Intellectual Breadth and Lifelong Learning
2. Inquiry and Critical Thinking
3. Communication
4. Global/Multicultural Knowledge and Awareness
5. Citizenship and Ethics
COURSE PREPARER AND DATE OF PREPARATION
R. Jacob Baker, Monday, January 15, 2015