Title :
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
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;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301841
