Title :
High input impedance filters with low component spread using current-feedback amplifiers
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
fDate :
6/22/1995 12:00:00 AM
Abstract :
A new configuration for high input impedance bandpass, lowpass and highpass filters with low component spread using two current-feedback amplifiers is presented. It has the following features: orthogonal control of the natural frequency and quality factor by grounded resistors or capacitors, simple conversion into a voltage-controlled filter, minimum active components, low active and passive sensitivities, low component spread suitable for high-Q applications and low output impedance. Experimental results are given to demonstrate the feasibility of the proposed circuits
Keywords :
Q-factor; active filters; band-pass filters; electric impedance; feedback amplifiers; high-pass filters; low-pass filters; operational amplifiers; current-feedback amplifiers; grounded capacitors; grounded resistors; high input impedance filters; high-Q applications; low component spread; low output impedance; low sensitivities; minimum active components; orthogonal control; quality factor; voltage-controlled filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950725
