Offset independent active RC filters

Author

Aronhime, Peter ; Desai, Mehul

Author_Institution

Dept. of Electr. Eng., Louisvile Univ., KY, USA

fYear

1992

Firstpage

1460

Abstract

Hilberman´s theorem is used as a guide to develop second order single op-amp active RC filters in which the output voltages are free from offsets arising from the use of active elements. These filters are useful in instrumentation applications in which the average value of the input signal must be carefully preserved or entirely eliminated with no contamination from offset voltages. The dynamic ranges, sensitivities, and the effects of op-amp finite gain bandwidth product are determined for each filter. It is shown that the order of these filters can be increased for the highpass and bandpass circuits while retaining the desirable features

Keywords

active filters; band-pass filters; high-pass filters; linear network analysis; linear network synthesis; transfer functions; Hilberman´s theorem; active RC filters; bandpass circuits; dynamic ranges; finite gain bandwidth product; highpass; instrumentation applications; offset independent configuration; offset voltages; second order; sensitivities; single op-amp; Active filters; Band pass filters; Circuits; Dynamic range; Frequency; Instruments; Low pass filters; Operational amplifiers; Transfer functions; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-0510-8

Type

conf

DOI

10.1109/MWSCAS.1992.271020

Filename

271020