Novel CMOS current feedback op-amp realization suitable for high frequency applications

Author

Ismail, Aly M. ; Soliman, Ahmed M.

Author_Institution

Dept. of Electron. & Commun. Eng., Cairo Univ., Giza, Egypt

Volume

47

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

918

Lastpage

921

Abstract

A novel CMOS current feedback operational amplifier (CFOA) is developed for wideband current-mode signal processing. The circuit has a very low input impedance over an exceptionally wide bandwidth and realizes an exact voltage-following action. Simulation results assuming 0.5 μm CMOS process shows that the impedance at the current input node is about 2 Ω and current and voltage transfer characteristics extend beyond 180 MHz

Keywords

CMOS analogue integrated circuits; current-mode circuits; electric impedance; feedback amplifiers; 0.5 micron; 180 MHz; CMOS op-amp realization; current feedback op-amp realization; current transfer characteristics; feedback operational amplifier; high frequency applications; low input impedance; voltage transfer characteristics; wideband current-mode signal processing; Bifurcation; Chaotic communication; Circuit simulation; Computer simulation; DC-DC power converters; Feedback; Frequency synchronization; Operational amplifiers; Power electronics; Power supplies;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.852946

Filename

852946