A 200 MHz steered current operational amplifier in 1.2-μm CMOS technology

Author

Abou-Allam, Eyad ; El-Masry, Ezz I.

Author_Institution

Dept. of Electr. Eng., Tech. Univ. Nova Scotia, Halifax, NS, Canada

Volume

32

Issue

2

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

245

Lastpage

249

Abstract

In this paper, we present the design of a CMOS current operational amplifier (COA). A design technique based on current steering is proposed to enhance the frequency capability of the amplifier and achieve higher bandwidth of operation. A complete COA was designed and fabricated using a 1.2-μm CMOS technology, the COA occupies an area of 0.13 mm². Results from HSPICE simulations and measurements indicate an open-loop gain of 70 dB, a gain-bandwidth product exceeding 200 MHz, and a settling time of 5.1 ns. The amplifier operated under ±3 V DC voltage supplies, and the power dissipation is approximately 4.5 mW

Keywords

CMOS analogue integrated circuits; operational amplifiers; wideband amplifiers; -3 V; 1.2 micron; 200 MHz; 3 V; 4.5 mW; 70 dB; CMOS current operational amplifier; bandwidth; design technique; frequency capability enhancement; steered current op amp; Bandwidth; CMOS technology; Frequency; Gain measurement; Operational amplifiers; Power amplifiers; Power dissipation; Power supplies; Time measurement; Voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.551917

Filename

551917