CHAPTER 9

Special-Purpose Amplifier Design

This chapter is devoted to simplified design with special-purpose IC amplifiers. These ICs (and the related application circuits shown here) are selected because they can be put to immediate use without design or with minimum design. The circuits are simply connected as shown and turned on. Besides the input and output devices, the only typical external components required are coupling/decoupling capacitors. When other external components are needed, values are provided for a given test result or design goal. This is supplemented with full information on how the external-component values affect the test/design results (so that other results can be obtained).

9.1 Gain-Controlled Microphone Preamplifier/VOGAD ...

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