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Fully Differential Operational Amplifiers

  • Johan Huijsing
Chapter
  • 346 Downloads
Part of the The Kluwer International Series in Engineering and Computer Science book series (SECS, volume 605)

Abstract

As the supply and signal voltages go down to lower values from 30V, 12V, 5V, 3V, 2V, and finally IV, the signal-to-noise-and-interference ratio becomes increasingly worse. An important way to cope with this problem is to use fully differential signal paths. The differential peak-to-peak signal then becomes maximally twice the total supply voltage V S = V SP - V SN . But even more important will be that the influence of substrate interference on the two balanced signals will largely cancel y another. All kinds of amplifiers, filters, sigma-delta converters, and other circuits using fully differential OpAmps may thus be designed in a fully balanced or differential way.

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Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • Johan Huijsing
    • 1
  1. 1.Delft University of TechnologyThe Netherlands

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