A novel family of low-voltage very low power super class AB OTAs with significantly enhanced slew rate and bandwidth

Author

Baswa, Sushmita ; Ramirez-Angulo, Jaime ; López-Martín, Antonio J. ; Carvajal, Ramon G.

Author_Institution

Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

Volume

1

fYear

2004

fDate

23-26 May 2004

Abstract

A simple modification to a conventional single-stage OTA based on the combined use of local common-mode feedback and very efficient class AB input stages leads to three proposals for class AB amplifier topologies. They operate at low voltage and feature very low static power consumption, bandwidth enhancement, and very high slew rate. Measurement results in a 0.5-μm CMOS technology confirm the mentioned improvements.

Keywords

CMOS analogue integrated circuits; circuit feedback; low-power electronics; network topology; operational amplifiers; 0.5 micron; CMOS technology; bandwidth enhancement; class AB amplifier topology; class AB input stage; enhanced slew rate; local common-mode feedback; low power class AB OTA; low static power consumption; low voltage operation; low-voltage class AB OTA; single-stage OTA modification; super class AB OTA; Bandwidth; CMOS technology; Energy consumption; Low voltage; Mirrors; Operational amplifiers; Power dissipation; Resistors; Strontium; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328298

Filename

1328298