200 μW CMOS class AB unity-gain buffers with accurate quiescent current control

Author

Lopez-Martin, Antonio J. ; Algueta, Jose M. ; Acosta, Lucia ; Carvajal, Ramon G. ; Ramirez-Angulo, Jaime

Author_Institution

Dept. of Electr. & Electron. Eng., Public Univ. of Navarra, Pamplona, Spain

fYear

2010

fDate

14-16 Sept. 2010

Firstpage

322

Lastpage

325

Abstract

A new family of CMOS two-stage unity-gain buffers is presented, based on introducing Quasi-Floating Gate (QFG) techniques to achieve class AB operation. The resulting buffers feature simplicity, low supply voltage requirements, and low quiescent currents which are accurately set regardless of process, temperature, or supply variations. Measurement results for a 0.5 μm CMOS implementation of three class AB buffers powered at ±1.65 V show maximum output currents ranging from 64 to 92 times the quiescent currents and static power consumption below 200 μW.

Keywords

CMOS integrated circuits; buffer circuits; low-power electronics; CMOS class AB unity-gain buffers; CMOS two-stage unity-gain buffers; accurate quiescent current control; power 200 muW; quasi-floating gate; size 0.5 mum; CMOS integrated circuits; Capacitance; Capacitors; Logic gates; Resistance; Strontium; Transistors; Analog integrated circuits; CMOS buffer; CMOS voltage follower; Quasi-Floating Gate;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC, 2010 Proceedings of the

Conference_Location

Seville

ISSN

1930-8833

Print_ISBN

978-1-4244-6662-7

Type

conf

DOI

10.1109/ESSCIRC.2010.5619708

Filename

5619708