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Digitally Programmable Multifunctional Current Mode Filter Using CCIIs
Iqbal A. Khan, M.R. Khan and Neelofer Afzal

A digital control is applied to current mode multifunctional filters realized employing three current conveyors. The circuit provide three current mode filter responses VIZ., low pass, band pass and high pass responses. The filter provides independent digital control to pole w0 and pole Q. In all the cases the filter gain is unity. The circuit also uses grounded capacitors which is desirable for monolithic implementation. The simulation results on the filter verify the theory.

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