An improved current-mode instrumentation amplifier with bandwidth independent of gain

Author

Khan, Anwar A. ; Al-Turaigi, Mohammed A. ; Ei-Ela, M.A.

Author_Institution

Dept. of Electr. Eng., King Saud Univ., Riyadh, Saudi Arabia

Volume

44

Issue

4

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

887

Lastpage

891

Abstract

A modification in current-mode instrumentation amplifier topology proposed in Electronics Letters, vol. 25, p.470-471 (1989) is described, and a detailed analytical analysis is given to show its superiority. The proposed circuit design is simple and easy to construct from readily available IC AD844 from Analog Devices. The proposed circuit features high CMRR without requiring well-matched resistors. Moreover, high differential gain and bandwidth can be achieved simultaneously. Experimental as well as simulation results are given in support of theoretical conclusions

Keywords

current conveyors; instrumentation amplifiers; network analysis; signal processing equipment; Analog Devices; IC AD844; bandwidth; circuit design; current-mode instrumentation amplifier; differential gain; high common mode ratio; topology; Analog integrated circuits; Bandwidth; Circuit simulation; Circuit synthesis; Frequency; Impedance; Instrumentation and measurement; Instruments; Resistors; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.392876

Filename

392876