Abstract
This paper presents two transadmittance mode universal filters having single voltage input and multiple current outputs. The filter employs three multiple output current controlled conveyors (MOCCCII) and two grounded capacitors. It can realize low pass, high pass, band pass, notch and all pass responses. As desired, the input voltage signal is inserted at high impedance input terminal and the output currents are obtained at high impedance output terminals and hence eases cascadability. The filter enjoys low sensitivity performance and low component spread; and exhibits electronic and orthogonal tunability of filter parameters via bias currents of MOCCCII. SPICE simulation results confirm the workability of the proposed structure.
Highlights
There has been substantial emphasis on development of current conveyor based filters in the recent past which can be attributed to its high performance properties such as wider signal bandwidths, greater linearity, larger dynamic range, lower power consumption, simple circuitry and occupy lesser chip area than their voltage mode counterparts [1]
This paper presents two transadmittance mode universal filters having single voltage input and multiple current outputs
The input voltage signal is inserted at high impedance input terminal and the output currents are obtained at high impedance output terminals and eases cascadability
Summary
There has been substantial emphasis on development of current conveyor based filters in the recent past which can be attributed to its high performance properties such as wider signal bandwidths, greater linearity, larger dynamic range, lower power consumption, simple circuitry and occupy lesser chip area than their voltage mode counterparts [1]. A careful study indicates that a limited literature is available on transadmittance mode filter [14,15,16,17,18] These circuits can nicely perform the operation of transadmittance mode filter, but still there is scope to improve them in the following fronts: use of floating passive components [14,15,16,17,18] which is not considered good for IC implementation point of view; input voltages are not applied at high impedance terminal [14,16,18]; availability of output currents through passive components [17] there is requirement of additional hardware; and filter parameters are not electronically tunable [17]. The function of the proposed structure has been confirmed by SPICE simulations
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