Scientific Disciplinary Sector (SSD)
FIS/01 - EXPERIMENTAL PHYSICS
I sem. dal Oct 3, 2016 al Jan 31, 2017.
The course introduces the physical principles of operation of semiconductor devices and logic gates made by the planar integrated circuit technology.
The students will be able to analyze and evaluate the behavior of physical systems that realize a device or implement a logical pattern and will be able to compare the different systems in terms of the physical parameters that characterize their behavior.
In order to follow properly the lectures it is recommended to have already acquired knowledge on classical physics (laws of motion, work, energy, electric field, electric potential).
Elements of Classical Physics and Atomic Physics: work and energy, electric field and potential, electric current, Ohm's law, linear circuits resistivity and temperature dependence in metals and semiconductors, the Bohr model, the periodic table of the elements
Crystal structure and electrical properties of metals, semiconductors and doped semiconductors: gas model of electrons in metals as a link model in semiconductors, concept of gap, doped semiconductors, nods to the band theory, conduction current and dissemination
P-n junction: non-polarized and polarized junction, ddp contact, voltage-current characteristic in forward and reverse bias, junction diode, Zener diode, OR / AND gates to diodes, switching times
Bipolar junction transistor BJT, input curves and in common emitter configuration output, common base, inverter, transfer rates characteristic and noise margins, switching times
Transitor in the field of JFET and MOSFET effect, manufacturing techniques, output and transfer curves, MOSFET and CMOS inverters, transfer characteristics, noise margins, switching times
Elementary digital circuits in MOS technology, CMOS, bipolar, ECL: NOR and NAND MOSFET and CMOS, NAND DTL, HTL, TTL, OR / NOR ECL
Comparison of logic families: propagation delay, power dissipation, fan-out, noise margins
Sensors and Applications
The final test will be an oral exams on the topics covered in the lectures.