Parasitic-capacitance-insensitive current-mode filters using operational transresistance amplifiers

Author

Chen, J.-J. ; Tsao, H.W. ; Liu, S.-I. ; Chiu, W.

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

142

Issue

3

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

186

Lastpage

192

Abstract

A parasitic-capacitance-insensitive MOSFET-C integrator and differentiator using operational transresistance amplifiers are proposed and experimental results demonstrated. The bandwidths of these circuits are also independent of their gains. The required capacitances are smaller than those in previous work. Two new configurations of universal current-mode biquad filters based on these circuits are presented. A second-order bandpass filter constructed using universal biquad filters and another third-order Chebyshev lowpass filter with 0.1 dB passband ripple are breadboarded and the measured results presented

Keywords

Chebyshev filters; MOS analogue integrated circuits; band-pass filters; biquadratic filters; differentiating circuits; integrating circuits; low-pass filters; operational amplifiers; bandwidths; biquad filters; current-mode filters; operational transresistance amplifiers; parasitic-capacitance-insensitive MOSFET-C differentiator; parasitic-capacitance-insensitive MOSFET-C integrator; passband ripple; second-order bandpass filter; third-order Chebyshev lowpass filter;

fLanguage

English

Journal_Title

Circuits, Devices and Systems, IEE Proceedings -

Publisher

iet

ISSN

1350-2409

Type

jour

DOI

10.1049/ip-cds:19951950

Filename

401295