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Very Low Voltage Rail-to-Rail Programmable-Gain CMOS Amplifier

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Abstract

A novel design technique for operating closed-loop amplifier circuits at very low supply voltages is proposed. It is based on the use of quasi-floating gate transistors, avoiding issues encountered in true floating-gate structures such as the initial floating-gate charge, offset drift with temperature, and the gain-bandwidth product degradation. A programmable-gain differential amplifier is designed and implemented following this method. Measurement results of an experimental prototype fabricated in a 0.5-μm CMOS technology validate on silicon the proposed technique.

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Authors and Affiliations

  1. Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM, 88003, USA

    Jaime Ramírez-Angulo & Chad Lackey

  2. Department of Electrical and Electronic Engineering, Public University of Navarra, Campus Arrosadía, E-31006, Pamplona, Spain

    Antonio J. López-Martín

  3. Dpto. de Ingeniería Electrónica, Escuela Superior de Ingenieros, Universidad de Sevilla, Camino de los Descubrimientos, E-41092, Sevilla, Spain

    Ramón G. Carvajal

Authors
  1. Jaime Ramírez-Angulo
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  2. Antonio J. López-Martín
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  3. Ramón G. Carvajal
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  4. Chad Lackey
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Corresponding author

Correspondence to Jaime Ramírez-Angulo.

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Ramírez-Angulo, J., López-Martín, A.J., Carvajal, R.G. et al. Very Low Voltage Rail-to-Rail Programmable-Gain CMOS Amplifier. Analog Integrated Circuits and Signal Processing 37, 269–273 (2003). https://doi.org/10.1023/A:1026286229283

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  • DOI: https://doi.org/10.1023/A:1026286229283

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