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A new cascadable first-order current-mode all-pass filter (FOCMAPF) consists of single active element namely, dual-X current conveyor transconductance amplifier (DXCCTA) and one capacitor is presented in this paper. The proposed filter offers the features of ease of cascading, electronic tuning of pole frequency, low sensitivities to the active components as well as to the passive component, low total...
In this paper, a new active-only integrator which can be used to realize low frequency filters with small chip area is presented. The circuit can be effectively implemented using transconductance elements and its integration frequency is electronically controllable. In order to illustrate its usefulness, a second-order multifunction filter with low cut-off frequency, yet which occupy a small chip...
A novel design of voltage-mode (VM) all-pass filter (APF) utilizing a single dual-X current conveyor (DXCCII) is proposed. Although many other voltage mode first-order APFs are available in literature, however majority of them cannot allow us to get high input impedance, low output impedance and grounded capacitor properties together. The proposed circuit offers these properties with reduced number...
This paper presents an electronically tunable biquadratic filter and a third order quadrature oscillator using current controlled differential voltage current conveyors and grounded capacitors. The proposed circuits are electronically tunable versions of recent analog functions and use only grounded capacitors, thus making them integrable. The PSPICE simulation results, using the TSMC MOSIS 0.25μm...
A current-mode quadrature oscillator using single current follower transconductance amplifier (CFTA) as active element is given. The oscillator has high output impedance, employs two grounded capacitors, single resistor and has electronic control on oscillation condition and on oscillation frequency. The proposed circuit is suitable for integrated circuit (IC) architecture. PSpice simulation result...
This paper presents a transadmittance mode universal filter with two inputs and four outputs using three multiple output current controlled conveyors (MO-CCCII) and two grounded capacitors. It can realize low pass, high pass, band pass, notch and all pass responses at high output impedance. The filter enjoys low sensitivity performance and low component spread; and exhibits electronic and orthogonal...
In this study, a CMOS current controlled current differencing buffered amplifier (C-CDBA) implementation is presented. Also, a novel first-order all-pass filter is proposed to show its advantages. Simulation results are in good agreement with the theoretical ones.
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
The realization of a resistorless current-mode first order allpass filter using current differencing transconductance amplifiers (CDTAs) as active components is presented. The proposed filter employs only two CDTAs and one virtually grounded capacitor, which its phase shift can be electronically adjusted by varying the bias current of the CDTA. The circuit also exhibits high-output impedance, which...
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