3 - Operational amplifiers
Published online by Cambridge University Press: 05 June 2012
Summary
Objectives
At the end of the study of this chapter the student should be:
familiar with the main imperfections in operational amplifiers, able to describe their effects on the output and stability of various circuits, and compensate for the errors due to them.
able to design several important linear and nonlinear circuits using operational amplifiers: phase shifting circuits, instrumentation amplifiers, comparators, precision rectifiers and logarithmic amplifiers.
familiar with different methods of design of active filters and able to choose the right design for a particular need.
able to describe the operating principles of multivibrators and triangular wave generators, and design these circuits given the specifications.
able to solve differential equations using summers, integrators and potentiometers, and apply amplitude and time scaling if necessary.
familiar with the principles of inverse function generators and able to design dividing, square rooting and RMS circuits using multipliers and operational amplifiers.
The name operational amplifier is derived from the fact that the amplifier was originally used to perform electronically various mathematical operations such as differentiation, integration, addition and subtraction. However, due to its versatility its use has been extended to other types of electronic circuits mainly in the fields of instrumentation and control engineering. The availability of inexpensive high performance operational amplifiers in the form of integrated circuits has obviously extended their use especially in analogue electronic circuits and systems.
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- Analogue Electronic Circuits and Systems , pp. 59 - 148Publisher: Cambridge University PressPrint publication year: 1991