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On the relationship between the CMRR or PSRR and the second harmonic distortion of differential input amplifiers | IEEE Journals & Magazine | IEEE Xplore

On the relationship between the CMRR or PSRR and the second harmonic distortion of differential input amplifiers


Abstract:

The results of a harmonic distortion analysis for a differential pair are presented, including the effects of mismatches and of the finite nonlinear common-mode rejection...Show More

Abstract:

The results of a harmonic distortion analysis for a differential pair are presented, including the effects of mismatches and of the finite nonlinear common-mode rejection ratio (CMRR) or power-supply rejection ratio (PSRR). Due to mismatches, a differential pair produces second-harmonic distortion. The presence of a finite common-mode gain limits the amount of feedback which can be usefully applied to suppress the harmonic distortion. When the common-mode gain is nonlinear, additional distortion is generated which is not suppressed by the feedback. When the amplifier has to drive a large load and when the supply line impedance is large, the finite PSRR causes similar effects.<>
Published in: IEEE Journal of Solid-State Circuits ( Volume: 24, Issue: 6, December 1989)
Page(s): 1740 - 1744
Date of Publication: 06 August 2002

ISSN Information:

Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium
Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium
Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium

Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium
Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium
Department of Electronics, Katholieke Universiteit Leuven, Heverlee, Belgium

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