Title :
A versatile RC-active circuit for instrumentation
Author :
Lafser, James E. ; Aronhime, Peter
Author_Institution :
Dept. of Electr. Eng., Louisville Univ., KY, USA
Abstract :
Second-order, RC-active filters in which the output signals are unaffected by the op-amp bias current, offset current, and offset voltage are presented. Examples of lowpass, bandpass, highpass, notch, and allpass circuits are provided. Such circuits are useful in instrumentation applications which are sensitive to parasitic DC sources in the signal path
Keywords :
active filters; all-pass filters; band-pass filters; high-pass filters; low-pass filters; operational amplifiers; RC-active circuit; RC-active filters; allpass circuits; bandpass; highpass; lowpass; notch; offset current; offset voltage; op-amp bias current; parasitic DC sources; signal path; Band pass filters; Capacitors; Circuits; Difference equations; Instruments; Operational amplifiers; Passive filters; Polynomials; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101823
