Systematic and optimal design of CMOS two-stage opamps with hybrid cascode compensation

Author

Yavari, Mohammad ; Shoaei, Omid ; Rodriguez-Vazquez, Angel

Author_Institution

Dept. of Electr. & Comput. Eng., Tehran Univ.

Volume

1

fYear

2006

fDate

6-10 March 2006

Abstract

This paper presents a systematic and optimal design of hybrid cascode compensation method which is used in fully differential two-stage CMOS operational transconductance amplifiers (OTAs). The closed loop analysis results are given to obtain a design procedure. A simple design procedure for the minimum settling time of the hybrid cascode compensation technique for a two-stage class A/AB amplifier is proposed. Optimal design issues of power dissipation are considered to achieve the lowest power consumption for the required settling time. Finally, a design example is presented to show both the usefulness of the hybrid cascode compensation and the proposed design procedure. The proposed design technique can help circuit designers as well as it can be used in computer aided circuit design tools

Keywords

CMOS integrated circuits; closed loop systems; compensation; integrated circuit design; low-power electronics; operational amplifiers; CMOS operational transconductance amplifiers; CMOS two-stage opamps; OTA; class A amplifier; class AB amplifier; closed loop analysis; computer aided circuit design tools; hybrid cascode compensation method; power consumption; power dissipation; CMOS integrated circuits; Capacitors; Costs; Equations; Hybrid integrated circuits; Laboratories; Microelectronics; Mirrors; Power dissipation; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Design, Automation and Test in Europe, 2006. DATE '06. Proceedings

Conference_Location

Munich

Print_ISBN

3-9810801-1-4

Type

conf

DOI

10.1109/DATE.2006.244037

Filename

1656866