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Differential amplifier with improved gain-accuracy and linearity

By Ruiheng Wu, F.J. Lidgey, K. Hayatleh and B.L. Hart

Abstract

A novel circuit design technique is presented which improves gain-accuracy and linearity in differential amplifiers. The technique employs negative impedance compensation and results demonstrate a significant performance improvement in precision, lowering sensitivity, and wide dynamic range. A theoretical underpinning is given together with the results of a demonstrator differential input/output amplifier with gain of 12 dB. The simulation results show that, with the novel method, both the gain-accuracy and linearity can be improved greatly. Especially, the linearity improvement in IMD can get to more than 23 dB with a required gain

Topics: TK
Publisher: John Wiley & Sons, Ltd.
Year: 2010
DOI identifier: 10.1002/(ISSN)1097-007X
OAI identifier: oai:gala.gre.ac.uk:1621
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