An electronically controlled current-mode triangular/square wave generator employing MO-CCCCTAs

Inchan, Surasak; Satthaphol, Pracharat; Pipatthitikorn, Paisit; Siripruchyanun, Montree

doi:10.1109/ecticon.2011.5947776

Cited by 19 publications

(19 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Silapan et al [15] used two multiple-output current controlled current differencing amplifiers (MO-CCCDTAs) which consist of current differencing unit (CDU) [1], [16], [17] and OTA subsections. A solution presented by Srisakul [18] is based Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation on multiple-output current controlled current conveyor transconductance amplifier (MO-CCCCTA) where current controlled current conveyor of second generation (CCCII) [1], [19], [20] and OTA create subsections. Two active elements are sufficient for construction of a functional generator presented in [21], where dual-output voltage differencing buffered amplifier (DO-VDBA) and fully balanced voltage differencing amplifier (FB-VDBA) were employed.…”

Section: Discussion Of Related Researchmentioning

confidence: 99%

Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation

Jeřábek

Šotner²,

Dostál³

et al. 2015

ElAEE

View full text Add to dashboard Cite

This paper deals with a very simple functional generator employing single multi-terminal advanced active device, so-called z-copy controlled gain voltage differencing current conveyor (ZC-CG-VDCC). This active element offers various inter-terminal relations and interesting possibilities of multi-parameter electronic control, which are utilized to control resulting application (triangular and square wave generator). Simple pulse width modulator (PWM) based on two ZC-CG-VDCCs is a further application example of presented generator. Verification of expected behavior was performed by simulation based on CMOS model of the ZC-CG-VDCC and also by lab measurement. Index Terms-Electronic control, functional generator, multiple-terminal advanced active element, PWM, voltage differencing current conveyor, ZC-CG-VDCC.

show abstract

Section: Discussion Of Related Researchmentioning

confidence: 99%

Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation

Jeřábek

Šotner²,

Dostál³

et al. 2015

ElAEE

View full text Add to dashboard Cite

show abstract

“…Current-mode active elements are found to be useful in various applications such as square wave generation, triangular wave generation, sawtooth wave generation, pulse width modulation generation, clock generation, and sinusoidal wave generation in the area of measurement and communication systems [24][25][26][27][28][29][30][31][32][33][34][35][36][37]. The circuits of triangular wave and square wave generators implemented by using different types of active elements have proved to be very attractive and necessary blocks in the area of signal processing.…”

Section: Proposed Triangular/square Wave Generatormentioning

confidence: 99%

“…The circuits of triangular wave and square wave generators implemented by using different types of active elements have proved to be very attractive and necessary blocks in the area of signal processing. In the literature, various circuits of triangular wave and square wave generator are available [24][25][26][27][28][29][30][31][32][33].…”

Section: Proposed Triangular/square Wave Generatormentioning

confidence: 99%

See 1 more Smart Citation

A fully electronically controllable Schmitt trigger and duty cycle‐modulated waveform generator

Kumar

Chaturvedi

Maheshwari

2017

Circuit Theory & Apps

View full text Add to dashboard Cite

The paper introduces a new Schmitt trigger consisting of only one multiple-output current inverting differential input transconductance amplifier with no passive element. The proposed circuit is simple and usable up to 100 MHz with the advantage of electronically controlled threshold levels and amplitude of the output. The circuit is also little sensitive to temperature and benefits from low power dissipation (0.5 mW). The amplitude of the output current is tunable electronically from 5 nA to 500 μA, which is a wide tunable range. The effects of transistors mismatch on proposed Schmitt trigger have also been explored. The utility of the proposed circuit is further justified through its application as a triangular/square wave generator, with a maximum frequency of 75 MHz. Duty cycle modulation through electronic means is also shown for the generator circuit, where duty cycle results for 80, 20, and 95% have been included, by varying external control current. The cadence VIRTUOSO simulation results by using generic process design kit 90-nm technology are shown to confirm the proposed theory. The proposed circuits are also verified through experimental results by using commercial integrated circuits: AD844 and LM13700. All the simulated and experimental results promise potential applications of the proposed circuits in instrumentation and communication systems. Figure 9. Monte Carlo sampling results showing the transient responses of V in , V z , and I out at 5 MHz for 150 runs when instance of mismatch is defined for (a) transistors M 5 and M 6 , (b) transistors M 20 and M 21 , and (c) transistors M 5 , M 6 , M 20 , and M 21 . [Colour figure can be viewed at wileyonlinelibrary.com] 2168 A. KUMAR, B. CHATURVEDI AND S. MAHESHWARI Figure 23. Experimentally observed square and triangular waveforms for (a) 80% duty cycle (b) 20% duty cycle (c) 95% duty cycle. [Colour figure can be viewed at wileyonlinelibrary.com] 2178A. KUMAR, B. CHATURVEDI AND S. MAHESHWARI Dostal T. Simply adjustable triangular and square wave generator employing controlled gain current and differential voltage amplifier. In 23th Conference Radioelektronika 2013; 109-114. 33. Chien HC. A current-/voltage-controlled four-slope operation square-/triangular-wave generator and a dual-mode pulse width modulation signal generator employing current-feedback operational amplifiers. Microelectronics Journal 2014; 45(6):634-647. 34. Chaturvedi B, Maheshwari S. Third-order quadrature oscillator circuit with current and voltage outputs.

show abstract

“…The circuits were built based on a current tunable OTA Schmitt trigger connected to an OTA-C integrator. Three current-mode schemes based on multiple-output current through transconductance amplifiers (MO-CTTAs), multipleoutput current controlled current differencing transconductance amplifiers (MO-CCCDTAs), and multiple-output current controlled current conveyor transconductance amplifiers (MOCCCCTAs) were also introduced in [21,23]. Although OTA-, MO-CTTA-, MO-CCCDTA-, and MO-CCCCTA-based wave generators exhibit the current tunable property, the transconductance gain and was specially designed to handle differential input voltage signals.…”

Section: Introductionmentioning

confidence: 99%

Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors

Chien

2012

Microelectronics Journal

View full text Add to dashboard Cite

An electronically controlled current-mode triangular/square wave generator employing MO-CCCCTAs

Cited by 19 publications

References 12 publications

Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation

Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation

A fully electronically controllable Schmitt trigger and duty cycle‐modulated waveform generator

Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors

Contact Info

Product

Resources

About