Chapter 170

Create a virtual ground with a sink/source voltage regulator

Gary Maulding

Abstract

The LT1118-2.5 source/sink voltage regulator is described. Used as a supply splitter, it provides the designer with an alternative to adding a negative supply. Its advantages over resistive dividers in establishing a virtual ground are explained.

Keywords

LT1118-2.5

source/sink voltage regulator

supply splitter

virtual ground

Analog signal processing functions embedded in dominantly digital systems usually require the addition of a negative power supply. Although many single supply analog components are available, optimum performance characteristics are often available only in devices that require both positive and negative power supplies. ...

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