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New configuration for realizing universal voltage-mode filter using two current feedback amplifiers

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1 Author(s)
Jiun-Wei Horng ; Dept. of Electron. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan

A new universal biquadratic filter configuration using two current-feedback amplifiers (CFAs) is presented. The circuit has three inputs and one low-impedance output and can realize all the standard filter functions, that is, highpass, bandpass, lowpass, notch, and allpass filters, without changing the passive elements. The proposed circuit has no requirements for component matching conditions and uses only four passive components. The center frequency and bandwidth can be orthogonally controllable. Also, the active and passive sensitivities are low

Published in:

IEEE Transactions on Instrumentation and Measurement  (Volume:49 ,  Issue: 5 )