A Two-Stage Fully Differential Inverter-Based Self-Biased CMOS Amplifier With High Efficiency

Rui Manuel Leitão Santos-tavares; João Carlos da Palma Goes; DEE Group Author

doi:10.1109/TCSI.2011.2150910

A Two-Stage Fully Differential Inverter-Based Self-Biased CMOS Amplifier With High Efficiency

Rui Manuel Leitão Santos-tavares, João Carlos da Palma Goes, DEE Group Author

Research output: Contribution to journal › Article › peer-review

93 Citations (Scopus)

Abstract

A two-stage fully differential CMOS amplifier comprising inverters as input devices and employing self-biasing techniques is presented. The proposed amplifier benefits from an optimum compensation through time-domain optimization which permits achieving high energy-efficiency. Moreover, it achieves the highest efficiency of its class and although it relies on a quasiclass- A topology, it is comparable to class-AB amplifiers. Detailed circuit analyses such as differential-mode, common-mode feedback, noise, and slew rate are carried out. Based on these analyses, a manual design methodology and genetic algorithm based optimization is presented. Finally, the most relevant experimental results for an integrated circuit prototype designed in a 0.13μm 1.2 V standard CMOS technology are shown.

Original language	Unknown
Pages (from-to)	1591-1603
Journal	Ieee Transactions On Circuits And Systems I-Regular Papers
Volume	58
Issue number	7(SI)
DOIs	https://doi.org/10.1109/TCSI.2011.2150910
Publication status	Published - 1 Jan 2011

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10.1109/TCSI.2011.2150910

Cite this

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title = "A Two-Stage Fully Differential Inverter-Based Self-Biased CMOS Amplifier With High Efficiency",

abstract = "A two-stage fully differential CMOS amplifier comprising inverters as input devices and employing self-biasing techniques is presented. The proposed amplifier benefits from an optimum compensation through time-domain optimization which permits achieving high energy-efficiency. Moreover, it achieves the highest efficiency of its class and although it relies on a quasiclass- A topology, it is comparable to class-AB amplifiers. Detailed circuit analyses such as differential-mode, common-mode feedback, noise, and slew rate are carried out. Based on these analyses, a manual design methodology and genetic algorithm based optimization is presented. Finally, the most relevant experimental results for an integrated circuit prototype designed in a 0.13μm 1.2 V standard CMOS technology are shown.",

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AB - A two-stage fully differential CMOS amplifier comprising inverters as input devices and employing self-biasing techniques is presented. The proposed amplifier benefits from an optimum compensation through time-domain optimization which permits achieving high energy-efficiency. Moreover, it achieves the highest efficiency of its class and although it relies on a quasiclass- A topology, it is comparable to class-AB amplifiers. Detailed circuit analyses such as differential-mode, common-mode feedback, noise, and slew rate are carried out. Based on these analyses, a manual design methodology and genetic algorithm based optimization is presented. Finally, the most relevant experimental results for an integrated circuit prototype designed in a 0.13μm 1.2 V standard CMOS technology are shown.

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