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Item type:Publication, Tunable Floating Capacitance Multiplier Using Single Fully Balanced Voltage Differencing Buffered Amplifier(2019-08-01); Channumsin, O.Abstract: An alternative circuit configuration for realizing an electronically adjustable floating capacitance multiplier is presented in this article. By consisting of only one fully balanced-voltage differencing buffered amplifier (FB-VDBA), one resistor and one capacitor, the presented multiplier circuit is canonical structure, and does not require any critical element matching constrain. The equivalent value of the simulated capacitance is adjustable by tuning the bias current of the FB-VDBA. The effect of the FB-VDBA non-idealities on the realized capacitance has been considered in detail. The proposed floating capacitance multiplier has been utilized, as an example application, in the design of a second-order RLC band-pass filter. To support the theory, some computer simulations with PSPICE software are also reported. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Actively Floating Lossy Inductance Simulators Using Voltage Differencing Buffered Amplifiers(2019-07-04)Two simple topologies for the simulation of floating lossy inductances are presented, which realize series and parallel RL impedances employing two voltage differencing buffered amplifiers (VDBAs) as active components. Each of the proposed circuit topologies consists of one resistor and one capacitor, which employs canonical passive components. The equivalent values of the simulated resistance and inductance can be tuned electronically by means of the external biasing currents of the VDBAs. Non-ideal gain effects of the VDBA on the proposed circuits are carried out. The performance of the proposed floating inductors is demonstrated on both a standard second-order RLC low-pass filter and a parallel resonant circuit. Laboratory experiments using commercially available ICs are included to verify the workability of the circuits. Several computer simulations with PSPICE program are also drawn together with theoretical ones for circuit performance verification. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, SITO-Type high-input impedance voltage-mode multifunction filter using single active element(2019-07-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, CMOS Voltage differencing transconductance amplifier with linearly adjustable transconductance gains(2019-07-01); ; In this work, a circuit configuration for the realization the CMOS voltage differencing transconductance amplifier (VDTA) with linear tunable transconductance and wide-input dynamic range is introduced. The circuit design technique is achieved by squaring the long-tail bias current of the differential-input voltage-to-current converter circuit. In addition, the linearity region of the input signal is also improved by using source degeneration technique. The workability of the proposed linearly tunable VDTA has been shown on the construction of the electronically controllable first-order allpass filter circuit. The proposed circuit and its application are investigated and simulated with PSPICE software using TSMC 0.25μm CMOS technology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Triple-input single-output electronically controlled voltage-mode biquadratic filter(2019-07-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple current-controlled VDTA-R schmitt trigger circuit(2019-07-01); 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Linearly Tunable CMOS Voltage Differencing Transconductance Amplifier (VDTA)(2019-06-01)This paper proposes an alternative way to implement a linearly tunable CMOS voltage differencing transconductance amplifier (VDTA). It has been designed by using the floating current source (FCS) and the current squaring circuit. The circuit achieves its linear tunability by squaring the long-tail biasing current of the FCS. In this way, the transconductance gains of the proposed CMOS VDTA can be varied linearly through adjusting the DC bias currents. As an application example, the proposed VDTA is used in the design of an actively tunable voltage-mode multifunction filter. The derived filter possesses the following desirable properties: simultaneous realization of three standard filter functions; employment of only two grounded capacitors; and electronic tunability of the natural angular frequency and the quality factor. The performance of the proposed circuit and its filter design application were examined by PSPICE simulations with TSMC 0.25-mm CMOS real process technology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electronically tunable floating lossy series-type inductance simulator using VDBAs(2019-03-16); This study demonstrates a resistorless floating lossy series RL-type inductor circuit utilizing voltage differencing buffered amplifiers (VDBAs) as active elements. The proposed lossy inductance simulator employs a canonical number of active and passive components, namely two VDBAs and only a grounded capacitor. It also realizes transconductance-tunable inductance value without needing any cancellation or element-matching constraints. As an illustrative application, the proposed floating inductor is used to construct a second-order lowpass filter practically. Computer simulation results with the real process 0.25-µm CMOS technology are used to confirm the workability of the proposed circuit and its application. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Low-output-impedance electronically adjustable universal filter using voltage differencing buffered amplifiers(2019-03-16); In this study, a voltage-mode universal filter with three inputs and single output is presented. The circuit is resistor-less, and consists of only two VDBAs and two capacitors. The proposed TISO filter realizes all the five standard biquadratic filter functions at the low-impedance-output terminal without any component matching criterion. The effect of the VDBA non-idealities on the presented filter performance is also discussed in detail. To prove the theoretical finding, simulation results are provided using PSPICE software.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Voltage differencing buffered amplifier-based electronically tunable grounded capacitance multiplier(2019-03-16); ; A minimal realization of electronically adjustable capacitance multiplication topology with voltage differencing buffered amplifier (VDBA) is proposed. The proposed capacitance multiplier circuit is designed by means of two VDBAs and one floating capacitor. A capacitance multiplication factor is adjusted electronically through the ratio of two transconductances. The effect of the non-ideal gains of the VDBA is also taken into account and carried out. As an analog application example, the proposed capacitance multiplier circuit is utilized in the design of an electronically tunable first-order low-pass filter. PSPICE simulations with TSMC 0.25-µm CMOS technology are included to support the theoretical analysis.1