Single-input and three-output current-mode biquadratic filters using multiple-output OMAs

* Faculty of Engineering and Research Center for Communication and Information Technology (ReCCIT), King Mongkut’s Institute of Technology Ladkrabang. ** Department of Industrial Electrical Technology (IET), Faculty of Engineering, King Mongkut’s Institute of Technology North Bangkok. Abstract A novel circuit configuration for the realization of the single-input and three-output (SITO) currentmode biquadratic filters employing only three multipleoutput OMAs is presented. The proposed circuit can simultaneously realize lowpass, bandpass and highpass filter functions at three high-impedance outputs without changing the circuit configuration and elements. Moreover, the resultant current-mode filter provides low passive and active sensitivities, uses of only grounded passive elements and can be orthogonal tuned of the parameters wo and Q-factor.