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2015•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

Transformation of Voltage Mode Filter Circuit Based on Op-Amp to Circuit Based on CCII

Thouraya, Ettaghzouti, Néjib, Hassen Hassen, Kamel Kamel, Kamel Besbes

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Abstract

In this paper, firstly we demonstrate the use of nodal admittance matrix to convert a low-pass band-pass filter based on operational amplifier(op-amp) to a circuit based on a second-generation current conveyor(CCII). This technique allows us to get eight presumptions of filter circuits. Secondly, we present a novel architecture circuit of CCII, which can operate at low supply voltage of ±0.75 V. All simulations are performed by TSPICE models. The simulation results show that this circuit has a low impedance at terminal X(R X=1.01 Ω), a very high input impedance at terminal Y, and wide bandwidth current and voltage. The center frequency of the proposed filter is variable on the interval [157 k Hz, 196 MHz].

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What this paper is about

In this paper, firstly we demonstrate the use of nodal admittance matrix to convert a low-pass band-pass filter based on operational amplifier(op-amp) to a circuit based on a second-generation current conveyor(CCII). This technique allows us to get eight presumptions of filter circuits. Secondly, we present a novel architecture circuit of CCII, which can operate at low supply voltage of ±0.75 V. All simulations are performed by TSPICE models. The simulation results show that this circuit has a low impedance at terminal X(R X=1.01 Ω), a very high input impedance at terminal Y, and wide bandwidth current and voltage. The center frequency of the proposed filter is variable on the interval [157 k Hz, 196 MHz].

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Available abstract

In this paper, firstly we demonstrate the use of nodal admittance matrix to convert a low-pass band-pass filter based on operational amplifier(op-amp) to a circuit based on a second-generation current conveyor(CCII). This technique allows us to get eight presumptions of filter circuits. Secondly, we present a novel architecture circuit of CCII, which can operate at low supply voltage of ±0.75 V. All simulations are performed by TSPICE models. The simulation results show that this circuit has a low impedance at terminal X(R X=1.01 Ω), a very high input impedance at terminal Y, and wide bandwidth current and voltage. The center frequency of the proposed filter is variable on the interval [157 k Hz, 196 MHz].

Key concepts: Current conveyor, Operational amplifier, Filter (signal processing), Current-feedback operational amplifier, Electronic engineering, All-pass filter, Electrical impedance, Voltage

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Transformation of Voltage Mode Filter Circuit Based on Op-Amp to Circuit Based on CCII — Research Paper | ScholarLens