Article
Design of two-stage class AB CMOS buffers: a systematic approach
Author/s | López Martín, Antonio
Algueta Algueta, José María Acosta Cabanillas, Lucía Ramírez Angulo, Jaime González Carvajal, Ramón |
Department | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Publication Date | 2011 |
Deposit Date | 2015-03-04 |
Published in |
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Abstract | A systematic approach for the design of two-stage class AB CMOS unity-gain buffers is proposed. It is based on the inclusion of a class AB operation to class A Miller amplifier topologies in unity-gain negative feedback ... A systematic approach for the design of two-stage class AB CMOS unity-gain buffers is proposed. It is based on the inclusion of a class AB operation to class A Miller amplifier topologies in unity-gain negative feedback by a simple technique that does not modify quiescent currents, supply requirements, noise performance, or static power. Three design examples are fabricated in a 0.5 μm CMOS process. Measurement results show slew rate improvement factors of approximately 100 for the class AB buffers versus their class A counterparts for the same quiescent power consumption (< 200 μW). |
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