A new compensation technique for two-stage CMOS operational transconductance amplifiers

Author

Yavari, Mohammad ; Zare-Hoseini, H. ; Farazian, M. ; Shoaei, Omid

Author_Institution

ECE Dept., Tehran Univ., Iran

Volume

2

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

539

Abstract

This paper presents a new compensation method for fully differential two-stage CMOS operational transconductance amplifiers (OTAs). It employs a hybrid cascode compensation scheme, merged Ahuja and improved Ahuja style compensations, for fast settling. A design procedure for minimum settling time of the proposed compensation technique for a two-stage class A/AB OTA is described. To demonstrate the usefulness of it, three design examples are considered.

Keywords

CMOS analogue integrated circuits; SPICE; compensation; current mirrors; differential amplifiers; equivalent circuits; operational amplifiers; Ahuja style compensations; CMOS amplifiers; HSPICE; active current mirrors; class AB amplifier; closed-loop small-signal equivalent circuit; compensation method; fast settling; folded cascode amplifier; fully differential amplifiers; hybrid cascode compensation; minimum settling time; step response; two-stage operational transconductance amplifiers; Analog circuits; Bandwidth; CMOS technology; Differential amplifiers; Frequency; Low voltage; Operational amplifiers; Poles and zeros; Stability; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on

Print_ISBN

0-7803-8163-7

Type

conf

DOI

10.1109/ICECS.2003.1301841

Filename

1301841