


Politecnico di Torino  
Anno Accademico 2009/10  
02LTHJA Electronic devices 

Corso di Laurea in Electronic And Computer Engineering  Vercelli 





Obiettivi dell'insegnamento
Electronic Devices is the first course of electronics in the ECE curriculum. Its goal is to introduce the students to the operating principles of the most common semiconductor devices: junction diodes, bipolar transistors and fieldeffect transistors, including their smallsignal models and elementary examples of amplifiers. An introduction to the fundamentals of semiconductor technology is also presented.

Competenze attese
The course allows the students to acquire several among the basic skills of an electronic engineer, i.e., the ability to understand (and to compute in some important cases) the band diagram of a semiconductor device; the understanding of the operating principles of junction diodes, bipolar transistors and MOSFETs; the ability to compute the parameters of their largesignal models; the ability to compute the DC bias point of a nonlinear device, to determine a smallsignal model by forming linear approximations about the DC bias point, and to use the smallsignal model in the study of simple onestage amplifiers. The students will be introduced also to the basics of nonvolatile memories and RAM architectures.

Prerequisiti
The prerequisites for understanding the physical models of electronic devices are calculus (up to and including linear differential equations) and the firstyear courses in physics. The study of large and smallsignal models requires the fundamentals of circuit theory.

Programma
Introduction to the physics of semiconductor materials: semiconductors in equilibrium, charge transport and generationrecombination mechanisms, determination of band diagrams, the driftdiffusion model.
Semiconductor diodes: operating principles, forward and reverse bias, large and smallsignal models, breakdown mechanisms, circuit applications. Bipolar junction transistors (BJTs): operating principles, modes of operation, largesignal models, DC bias and smallsignal equivalent circuits. Operating principles of fieldeffect transistors (FETs). Metaloxidesemiconductor (MOS) structures. MOSFETs: large and smallsignal models, switching and linear applications. MOS scaling, fundamental CMOS logic gates. Introduction to solidstate memory: ROM and PROM, nonvolatile rewritable memory, static and dynamic RAM. Basics of device fabrication technology: growth of semiconductor materials, doping by diffusion and ion implantation, oxidation, photolitography, etching, bonding, CMOS technology. 
Laboratori e/o esercitazioni
Lessons will be followed by numerical examples and exercises.

Bibliografia
For each argument, references will be given during the course.

Controlli dell'apprendimento / Modalità d'esame
The exam includes a written text and an oral discussion.

Orario delle lezioni 
Statistiche superamento esami 
