Design of Sinusoidal, Triangular, and Square wave Generator Using Current Feedback Operational Amplifier (CFOA)

Haque, Akm Sydul; Hossain, M.M.; Davis, W.A.; Russell, H.T.; Carter, R.L.

doi:10.1109/tpsd.2008.4562735

Cited by 34 publications

(21 citation statements)

References 14 publications

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“…Subsequently, the operation returns to on-duty cycle mode. The decreasing rate of V o2 and the currents I X and I Z in this state are expressed in (14) to (16).…”

Section: Circuit Descriptions and Operationsmentioning

confidence: 99%

“…For several years, the typical configuration of square/triangular generator was realized by using OPAs combined with external passive components [1]. In addition to OPA-based configuration, previous studies presented several implementations of square/triangular wave generators using different types of active devices [11][12][13][14][15][16]. For the reported square/triangular wave generators, one current tunable topology was designed using three operational transconductance amplifiers (OTAs) [12].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, a CC-based square/triangular wave generator was first introduced in 2000 [11]; and a recent study revealed a modified topology to enhance circuit performance and reduce the passive component counts [15]. A square/triangular wave generator using current feedback amplifiers (CFOAs) has also been reported in [14]. In 2007 literature [13] presented an operational transresistance amplifier (OTRA) based scheme that featured switch-controllable operation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Square/Triangular Wave Generator Using Single DO-DVCC and Three Grounded Passive Components

Chien¹

2013

AJEEE

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This study proposes a novel square/triangular wave generator based on a dual outputs differential voltage current conveyor (DO-DVCC). The proposed circuit uses one DO-DVCC combined with three grounded passive components. The presented scheme reveals a compact topology and can produce square/triangular waveform simultaneously. To verify their feasibility, commercially available ICs were used for implementing the prototype circuits. Experimental results revealed consistency with theoretical analyses.

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“…Subsequently, the operation returns to on-duty cycle mode. The decreasing rate of V o2 and the currents I X and I Z in this state are expressed in (14) to (16).…”

Section: Circuit Descriptions and Operationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Square/Triangular Wave Generator Using Single DO-DVCC and Three Grounded Passive Components

Chien¹

2013

AJEEE

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“…voltage-controlled duty cycle oscillator in silicon sensors, A/D and D/A converters, for external tuning of pulse width modulation in control modules, calibration systems, applied electronics, communication modules, electronic instrumentation, signal processing functions, control circuits to power converting mechanism, based on range of operating frequency used in sensor interfaces, telecommunications and switching networks, clocking pulse in digital systems, electromechanical systems [1][2][3][4][5][6][7][8]. This rationalizes the enlargement of a hefty quantity of square wave generators using a diversity of circuit configurations [9].…”

Section: Introductionmentioning

confidence: 99%

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

Vijay

Srinivasulu

2017

Arab J Sci Eng

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By using two resistors and a single capacitor with second-generation differential current conveyor as an active element, a new square wave generator is proposed and implemented. The frequency of operation of the introduced model is varied with respect to the variation of remaining passive components. Maximum reduction in noise effects caused by parasitics generated during integrated circuit fabrication is achieved with the scheme of grounded capacitor. The mathematical model of the selected circuit is verified in both simulation and experimental mode and found having matched in all three aspects. The elevated advantages and merits of the given topology are compared and tabulated contrary to the existing standard models. Using Cadence virtuoso with gpdk 180 nm libraries, the circuit is verified with a supply rail voltage of ±2.5 V. Later, prototype is also tested with commercially available current feedback operational amplifiers of AD844AN.

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“…Its main application is to decrease noise effect in triggering devices and analog to digital conversion [2,3]. Additionally, it is a principal block employed in a square wave generator [4][5][6][7][8][9], pulse width modulator (PWM) [10][11][12][13], monostable multivibrator [14][15][16][17], and etc. Conventionally, there are two techniques to implement the Schmitt triggers.…”

Section: Introductionmentioning

confidence: 99%

Fully and electronically controllable current-mode Schmitt triggers employing only single MO-CCCDTA and their applications

Silapan

Siripruchyanun

2011

Analog Integr Circ Sig Process

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This article presents the new current-mode counterclockwise (CCW) and clockwise (CW) Schmitt triggers based on multiple-output current controlled current differencing transconductance amplifier (MO-CCCDTA). The circuit descriptions are very simple, each construction consists of only single MO-CCCDTA, without any external passive element. The hysteresis and amplitude of the output current of each Schmitt trigger can be tuned independently/ electronically by input bias currents. In addition, the output signals are independent of the thermal voltage (V T ). The applications as a relaxation oscillator, triangular/square wave generator, pulse width modulation and monostable multivibrator are given here to display the usefulnesses of the presented Schmitt triggers. The PSpice simulation and experimental results are depicted, and agree well with the theoretical anticipation. The maximum power consumptions of CCW and CW Schmitt triggers are approximately 235 and 191 lW, respectively, at ±1.5 V supply voltages.

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Design of Sinusoidal, Triangular, and Square wave Generator Using Current Feedback Operational Amplifier (CFOA)

Cited by 34 publications

References 14 publications

Square/Triangular Wave Generator Using Single DO-DVCC and Three Grounded Passive Components

Square/Triangular Wave Generator Using Single DO-DVCC and Three Grounded Passive Components

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

Fully and electronically controllable current-mode Schmitt triggers employing only single MO-CCCDTA and their applications

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