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A Fully Differential CMOS Voltage Buffer for Continuous- and Discrete-Time Applications

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Abstract

This paper presents a new CMOS analog fully differential voltage buffer, with large dynamic range and low harmonic distortion. Its design is based on the use of cross-coupled input differential pairs and internal current feedback. Two design approaches are proposed, with the objective of minimizing power consumption: one for switched-capacitor circuits and the other for Gm-C circuits. Design equations and simulation results are presented as well. Illustrative design examples are developed for a 0.35-μm CMOS technology using a power supply voltage of 2.5 V.

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Authors and Affiliations

  1. Department of Electrical Engineering—COPPE/UFRJ, Federal University of Rio de Janeiro, CP68504, CEP21941-971, Rio de Janeiro, RJ, Brazil

    Fernando A. P. Barúqui & Antonio Petraglia

Authors
  1. Fernando A. P. Barúqui
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  2. Antonio Petraglia
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Correspondence to Antonio Petraglia.

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Barúqui, F.A.P., Petraglia, A. A Fully Differential CMOS Voltage Buffer for Continuous- and Discrete-Time Applications. Circuits Syst Signal Process 30, 355–370 (2011). https://doi.org/10.1007/s00034-010-9226-0

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  • DOI: https://doi.org/10.1007/s00034-010-9226-0

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