ECE 343
Electronic Circuits Laboratory

Section Type Times Days Location Instructor
M LAB 0800 - 1050 T   268 Everitt Lab  Chandrasekhar Radhakrishnan
N LAB 1100 - 1350 T   268 Everitt Lab  Chandrasekhar Radhakrishnan
O LAB 1400 - 1650 T   268 Everitt Lab  Chandrasekhar Radhakrishnan
P LAB 0800 - 1050 R   268 Everitt Lab  Chandrasekhar Radhakrishnan
Q LAB 1700 - 1950 T   268 Everitt Lab  Chandrasekhar Radhakrishnan
R LAB 1100 - 1350 R   268 Everitt Lab  Chandrasekhar Radhakrishnan
S LAB 1400 - 1650 R   268 Everitt Lab  Chandrasekhar Radhakrishnan

Web Page http://courses.engr.illinois.edu/ece343/
Official Description Companion laboratory for ECE 342. Course Information: Credit is not given for both ECE 343 and PHYS 404. Prerequisite: Credit or concurrent registration in ECE 342.
Subject Area Integrated Circuits and Systems
Course Prerequisites Credit or concurrent registration in ECE 342
Course Directors Chandrasekhar Radhakrishnan
Detailed Description and Outline

This course is designed to supplement the material of ECE 342 and provide a first experience in design, simulation, analysis, and test of electronic circuits using PSpice and lab instruments.

Topics:

  • Electric circuit analysis
  • Diodes, rectifier and regulator
  • MOS transistors
  • MOS logic circuits
  • MOS amplifier circuits
  • Current source
  • Differential amplifier
  • Active load
  • Output stage
  • Operational amplifiers
Computer Usage
  • Computer simulation using OrCAD Capture/PSpice
  • Data analysis using Agilent VEE
Topical Prerequisities
  • Familiarity with circuit lab work and instrumentation
  • Familiarity with a personal computer
Texts
No text.
ABET Category

Engineering Science: 25%
Engineering Design: 75%

Course Goals

ECE 343 is an adjunct to ECE 342 - Electronic Circuits - and is required for ECE majors. The goals are to supplement the material of ECE 342, to assist students in obtaining a better understanding of the operation of microelectronic circuits, and to provide a first experience in design, analysis, and test of microelectronic circuits using PSpice and lab instruments.

Project #1 Network Analysis (6 hours)

At the end of this project, the students will be able to do the following:

1. Create a circuit using OrCAD Capture, edit the parameters of the circuit elements, set up the type of analysis, run the simulation, and demonstrate the results using Probe. (d, k)

2.. Analyze a circuit containing two resistors, one capacitor, and one pulse voltage source and find the step response of the voltages in the circuit. (a, d)

3. Simulate the circuit using PSpice and check the validity of the theoretical analysis. (d, k)

4. Deduce the values of the components inside a box containing three resistors and one capacitor by measuring time constants, voltages, currents, and resistances at the box terminals using DMMs, an oscilloscope, a function generator, and a power supply, and analyze and present the scope display. (b, d, e)

5. Simulate the deduced circuit in box and verify the measurements on PSpice. (b, d, k)

Project #2 Power Supply Circuit (9 hours)

At the end of this project, the students will be able to do the following:

1. Design a dc power supply containing a transformer, rectifier, filter, and regulator, that meets the output specifications and cost requirement. (a, b, c, d)

2. Verify the design on PSpice by simulating the complete power supply circuit and analyzing the performance specifications. (c, d, k)

3. Build the power supply circuit from actual parts, bench-test it, and demonstrate the output performance and power dissipation. (b, d)

4. Analyze and present the scope display and compare with the theoretical PSpice values. (b, c, d, k)

Project #3 MOS Logic Circuits (12 hours)

At the end of this project, the students will be able to do the following:

1. Design and simulate CMOS and NMOS logic circuits on PSpice to achieve the highest value of the evaluation function which involves propagation delay, noise margin, power dissipation, and cost. (c, d, k)

2. Analyze the MOS logic circuits and justify the optimization techniques using the theory from ECE 342. (a, c, d)

3. Build a CMOS or NMOS logic circuit, verify the logic function, and measure the propagation delay, noise margin, and power dissipation using an oscilloscope, function generator, and power supply. (b, d)

4. Analyze and present the scope display and compare with the theoretical values. (b, c, d, k)

Project #4 CMOS Op Amp (12 hours)

At the end of this project, the students will be able to do the following:

1. Design and simulate the current source of an op amp using PSpice, calculate the reference resistance for given reference current, determine the output resistance of the current source from the current-voltage plot of the current source output, adjust the output current by varying the “M” parameter, and compare the simulation results to the theoretical values. (a, c, d, k)

2. Design and simulate the difference pair of the op amp with a resistive load using PSpice; plot the dc transfer curves for difference-mode and common-mode; measure the difference-mode gain, common-mode gain, and CMRR; and compare the simulation results with the theoretical values calculated using small-signal analysis. (a, c, d, k)

3. Design and simulate the active load of the differential amplifier using PSpice; plot the dc transfer curves for difference-mode and common-mode; measure the difference-mode gain, common-mode gain, and CMRR; and compare the simulation results with the theoretical values calculated using small-signal analysis. (a, c, d, k)

4. Design and simulate the gain stage of the op amp using PSpice; adjust the output bias voltage by changing the width of the amplifier transistor and that of the current source transistor; plot the dc transfer curves for difference-mode and common-mode; measure the difference-mode gain, common-mode gain, and CMRR; find the offset voltage of the amplifier; and compare the simulation results with the theoretical values calculated using small-signal analysis. (a, c, d, k)

5. Design and simulate the bias circuit and output buffer of the op amp using PSpice; adjust the output bias voltage; plot the dc transfer curves for difference-mode and common-mode; measure the difference-mode gain, common-mode gain, CMRR, and offset voltage; find the output resistance of the op amp by running the transfer function analysis; and compare the simulation results with the theoretical values calculated using small-signal analysis. (a, c, d, k)

6. Simulate the complete op amp circuit and optimize its performance using PSpice, maximize the difference gain, zero the output bias voltage, lower the output resistance and power dissipation of the op amp, and justify the optimization techniques using the theory from ECE 442. (a, c, d, k)

7. Simulate various test circuits to demonstrate the behavior of the optimized op amp. (a, c, d, k)

Each project requires a written report fulfilling ABET outcomes (f) and (g).

Last updated: 2/18/2013