A digitally programmable voltage-mode multifunction filter using CCDVCCs

  • Authors:

  • Chaiyan Chanapromma;Winai Jaikla;Montree Siripruchyanun

  • Affiliations:

  • Computer Engineering Program, Faculty of Industrial Technology, Uttaradit Rajabhat University, Muang, Uttaradit, Thailand;Electric and Electronic Program, Faculty of Industrial Technology, Suan Sunandha Rajabhat University, Dusit, Bangkok, Thailand;Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand

  • Venue:
  • ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
  • Year:
  • 2009

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Abstract

This article presents a voltage-mode multi-function filter performing completely standard functions: low-pass, highpass, band-pass, band-reject and all-pass functions, current controlled differential voltage current conveyors (CCDVCCs). The features of the circuit are that: the quality factor and pole frequency can be tuned independently via the input bias currents: the circuit description is very simple, consisting of merely 2 CCDVCCs, 1 resistor and 2 capacitors. Only one external resistor and without any component matching conditions, the proposed circuit is very appropriate to further develop into an integrated circuit. Additionally, each function response can be selected by suitably selecting input signals with digital method. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation.