High input impedance voltage-mode lowpass, bandpass and highpassfilter using current-feedback amplifiers |
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| Authors: | Jiun-Wei Horng Maw-Huei Lee |
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| Affiliation: | Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ; |
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| Abstract: | A new configuration for realising high input impedance lowpass, bandpass and highpass filters simultaneously by using three current-feedback amplifiers, three grounded capacitors, three grounded resistors and one floating resistor is presented. The proposed circuit offers the following features: realisation of lowpass, bandpass and highpass signals from the same configuration, no requirements for component matching conditions, orthogonal control of ω0 and Q, the use of grounded capacitors, low active and passive sensitivities and low output impedance |
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