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

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4 Author(s)
Chen, J.-J. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Tsao, H.W. ; Liu, S.-I. ; Chiu, W.

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

Published in:

Circuits, Devices and Systems, IEE Proceedings -  (Volume:142 ,  Issue: 3 )

Date of Publication:

Jun 1995

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