CHAPTER 1

Amplifier Circuit Basics

This chapter is devoted to basic amplifier circuits and characteristics. It is possible to design amplifier circuits “from scratch.” However, amplifiers are available in integrated circuit (IC) form, and it is generally simpler to use such ICs.

The data sheets for IC amplifiers often show the connections and provide all necessary design parameters to convert the IC to a complete amplifier by adding external components. This chapter describes the functions and operation of IC amplifiers to help you understand the data sheet information.

For our purposes, the function of an amplifier is to increase the amplitude of a voltage, current, or power. Secondary functions are to isolate signal sources from other circuits ...

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