3
art I, Devices and Basic Circuits, includes the most fundamental and essential topics
for the study of electronic circuits. At the same time, it constitutes a complete pack-
age for a first course on the subject.
The heart of Part I is the study of the three basic semiconductor devices: the diode
(Chapter 4); the MOS transistor (Chapter 5); and the bipolar transistor (Chapter 6). In each
case, we study the device operation, its characterization, and its basic circuit applications.
For those who have not had a prior course on device physics, Chapter 3 provides an over-
view of semiconductor concepts at a level sufficient for the study of electronic circuits. A
review of Chapter 3 should prove useful even for those with prior knowledge of semi-
conductors.
Since the purpose of electronic circuits is the processing of signals, an understanding
is essential of signals, their characterization in the time and frequency domains, and their
analog and digital representations. This is provided in Chapter 1, which also introduces
the most common signal-processing function, amplification, and the characterization
and types of amplifiers.
Besides diodes and transistors, the basic electronic devices, the op amp is studied in
Part I. Although not an electronic device in the most fundamental sense, the op amp is
commercially available as an integrated circuit (IC) package and has well-defined termi-
nal characteristics. Thus, despite the fact that the op amp’s internal circuit is complex, typ-
ically incorporating 20 or more transistors, its almost-ideal terminal behavior makes it
possible to treat the op amp as a circuit element and to use it in the design of powerful
circuits, as we do in Chapter 2, without any knowledge of its internal construction. We
should mention, however, that the study of op amps can be delayed to a later point, and
Chapter 2 can be skipped with no loss of continuity.
The foundation of this book, and of any electronics course, is the study of the two
transistor types in use today: the MOS transistor in Chapter 5 and the bipolar transistor
in Chapter 6. These two chapters have been written to be completely independent of one
another and thus can be studied in either order as desired. Furthermore, the two chap-
ters have the same structure, making it easier and faster to study the second device, as
well as to draw comparisons between the two device types.
After the study of Part I, the reader will be fully prepared to undertake the study of
either integrated-circuit amplifiers in Part II or digital integrated circuits in Part III.
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