Autors: Pandiev, I. M.
Title: Analysis and simulation modeling of programmable CFOA-based universal filters with CMOS digital potentiometers
Keywords: Potentiometers, Band-pass filters, Resistance, Transfer functions, CFOA

Abstract: In this paper the proposed configuration of a digitally controllable non-inverting RC integrator, employing 4-terminal CFOA is an object of analysis and simulation modeling. Based on a theoretical analysis of the circuit the equations for the transfer functions and formulas for the related electrical parameters are obtained. By using the synthesized circuit of an integrator a programmable CFOA-based universal filter with CMOS digital potentiometers connected as variable resistors is developed. The proposed filter can generate basic biquadratic filtering functions namely: low-pass (LP), band-pass (BP), highpass (HP) and band-reject (BR). The validity of the filter is demonstrated by simulations and experimental test of sample electronic circuits, working up to 2MHz with THD<1%.

References

    Issue

    Proceedings of the Jubilee 40th International Spring Seminar on Electronics Technology (IEEE ISSE 2017), pp. 932-937, 2017, Bulgaria, IEEE, ISSN 2161-2536

    Цитирания (Citation/s):
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    Вид: пленарен доклад в международен форум, публикация в реферирано издание, индексирана в Scopus