A cascode-free single-stage amplifier using a fully-differential folded voltage-combiner

R. Póvoa, N. Lourenço, N. Horta, R. Santos-Tavares, J. Goes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper presents the design and the electrical simulations of a single-stage amplifier with high energy-efficiency and enhanced DC gain without the need of using any cascode devices or any positive-feedback or feed-forward techniques. Instead, a fully-differential folded voltage-combiner block is used in replacement of the traditional tail current-source that is normally employed to bias the differential-pair. Simulation results of the properly optimized circuit, using AIDA-C, a state-of-the-art multi-objective multi-constraint circuit-level optimization tool, demonstrate that a DC gain above 50 dB can be achieved, together with high energy efficiency. A simulated figure-of-merit above 2200 MHzxpF/mA has been reached. The circuit was designed using a 130 nm CMOS technology, draining approximately 0.2 mA from a 1.2 V power supply.

Original languageEnglish
Title of host publication2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages263-266
Number of pages4
ISBN (Electronic)978-1-4799-4242-8
DOIs
Publication statusPublished - 25 Feb 2015
Event2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014 - Marseille, France
Duration: 7 Dec 201410 Dec 2014

Conference

Conference2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014
CountryFrance
CityMarseille
Period7/12/1410/12/14

Keywords

  • Electronic Design Automation
  • Energy-Efficiency
  • Fully-differential Voltage-Combiners
  • Multi-Objective Multi-Constraint Optimization
  • OTA
  • Single-Stage Amplifier

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  • Cite this

    Póvoa, R., Lourenço, N., Horta, N., Santos-Tavares, R., & Goes, J. (2015). A cascode-free single-stage amplifier using a fully-differential folded voltage-combiner. In 2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014 (pp. 263-266). [7049972] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS.2014.7049972