Study-Unit Description

Study-Unit Description


CODE ESE2103

 
TITLE Operational Amplifiers

 
UM LEVEL 02 - Years 2, 3 in Modular Undergraduate Course

 
ECTS CREDITS 5

 
DEPARTMENT Electronic Systems Engineering

 
DESCRIPTION 1) OPAMP building blocks: Differential Amplifier, Current Mirror, Cascode: Topology, DC analysis, AC analysis, Transfer function and Performance considerations.
2) Voltage Feedback Opamps: Op-amp concept. Implementation technologies, design, construction and manufacture. Ideal and practical op-amp characteristics.
3) Current Feedback Opamps: Performance and comparison with Voltage Feedback Opamps. Current feedback circuits – inverting and non-inverting amplifiers.
4) Negative Feedback Op-amp circuits: Inverting, Noninverting Amps, Adder, Subtractor, Integrator, Differentiator, Log, Antilog, Negative Resistance, Howland Current Source, Deboo Integrator, (Deboo Oscillator), Gyrator.
5) Super Rectifiers: Half-wave, Full-wave, Saturating, Non-Saturating and Subtracting.
6) Sample and Hold Circuits: The Ideal Sample and Hold Circuit, Open Loop & Closed Loop Architectures, Comparison between types, Charge Injection compensation.
7) Peak Detectors: Open-loop, Closed-loop, Droop-rate control, Capacitor properties.
8) Positive Feedback Op-amp circuits: Multivibrators, The Schmitt Trigger (Bistable), The Relaxation Oscillator (Astable), The Opamp Single Shot (Monostable).
9) Design & Construction of High Speed, Surface Mount, Analogue Printed Circuits.

Laboratory Work:

1) Basic Opamp Circuits: Adder, Subtractor, Integrator, Differentiator, Log, Antilog, and Super Rectifiers.
2) Howland -ve resistance, current source, Deboo Integrator, (Deboo Oscillator).
3) Design, Simulate, build and test High-Speed Current Feedback Opamp Amplifiers.
4) The Opamp Schmitt Trigger, Relaxation Oscillator and Monostable.

Study-unit Aims:

This unit also introduces the Operational Amplifier (opamp) and by giving students sufficient insight into its principle of operation, several performance criteria are defined and analyzed. Voltage and Current feedback opamp circuits are discussed compared and modelled. The student is introduced to the fundamental opamp circuits covering both positive and negative feedback.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:
- Describe the internal principle of operation of a both voltage and current feedback opamps and list and describe the properties of an ideal and non-ideal typical opamp.
- Describe the principle of operation of a wide array of opamp circuits.
- Specify and select an opamp fit for any specific purpose.
- Analyse and design a wide range of standard Opamp circuits to any given achievable specification using positive or negative feedback as necessary.
- Analyse and design oscillator and multivibrator circuits, Integrators, Differentiators, Adders, Subtractors, Log, Antilog, Peak detectors, Super rectifiers, Sample and hold etc...

2. Skills:

By the end of the study-unit the student will be able to build and test various operational amplifier circuits.

Main Text/s and any supplementary readings:

Main Texts:

- Franco, Sergio, Design with Operational Amplifiers and Analog Integrated Circuits. McGraw-Hill.

Supplementary Readings:

- Floyd, T. , Electronic Devices. Prentice Hall.
- Horrowitz, P. And Hill, W., The Art of Electronics. Cambridge University Press.
- The Electronics Handbook, Whitaker, Jerry C., 2005.

 
ADDITIONAL NOTES Pre-requisite Study-unit: ESE1201

Please note that a pass in the Practical and the Examination components is obligatory for an overall pass mark to be awarded.

 
STUDY-UNIT TYPE Lectures, Practical and Tutorials

 
METHOD OF ASSESSMENT
Assessment Component/s Assessment Due Sept. Asst Session Weighting
Practical [See Add. Notes] SEM1 Yes 35%
Examination [See Add. Notes] (3 Hours) SEM1 Yes 65%

 
LECTURER/S Marc Anthony Azzopardi

 

 
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It should be noted that all the information in the description above applies to study-units available during the academic year 2023/4. It may be subject to change in subsequent years.

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