A Current-mode Square/Triangular Ware Generator Based on Multiple-output VDTAs

Siripruchyanun, Montree; Payakkakul, Kangwal; Pipatthitikorn, Paisit; Satthaphol, Pracharat

doi:10.1016/j.procs.2016.05.040

Cited by 11 publications

(13 citation statements)

References 6 publications

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“…Note that many researchers refer to the interconnection of the CCCII and OTA as current conveyor Many concepts use standard commercially available AEs (e.g., operational transconductance amplifiers (OTAs) [5,6], current conveyors [10], operational amplifiers [14,25], variable gain amplifiers [14,16,17], or their easily accessible models, i.e., internal topologies). In numerous works, the active subparts of basic building structures [2,3] are understood as a single element [7][8][9][11][12][13]15,[18][19][20][21][22][23]. It substantially changes view on the circuit and credibility of results when these concepts are presented as: (a) Simulated models only, (b) real so-called "behavioral models" [2,3] for experiments (based on off-the-shelf components), and (c) real fabricated complementary metal-oxide semiconductor (CMOS) cells encapsulated in a single integrated circuit (IC) package.…”

Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

“…It substantially changes view on the circuit and credibility of results when these concepts are presented as: (a) Simulated models only, (b) real so-called "behavioral models" [2,3] for experiments (based on off-the-shelf components), and (c) real fabricated complementary metal-oxide semiconductor (CMOS) cells encapsulated in a single integrated circuit (IC) package. However, many AEs are used and designed on hypothetical level [7][8][9][11][12][13]15,[18][19][20][21][22]26] without fabrication in the form of IC. In fact, many of these devices include several functional active subparts.…”

Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

“…However, there are some disadvantages, namely: High power consumption (information is not available in many papers), high area requirements, high number of passive elements for serial production of a final application. Solutions presented in [7][8][9][11][12][13]15,[18][19][20][21][22][23]26] have core in hypothetical (not fabricated as a single chip) subparts creating a complex active element. Many of these solutions are constructed as behavioral models using commercially available parts and tested experimentally.…”

Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

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Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Šotner

Jeřábek

Polák

et al. 2020

Sensors

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This paper presents a compact and simple design of adjustable triangular and square wave functional generators employing fundamental cells fabricated on a single integrated circuit (IC) package. Two solutions have electronically tunable repeating frequency. The linear adjustability of repeating frequency was verified in the range between 17 and 264 kHz. The main benefits of the proposed generator are the follows: A simple adjustment of the repeating frequency by DC bias current, Schmitt trigger (threshold voltages) setting by DC driving voltage, and output levels in hundreds of mV when the complementary metal-oxide semiconductor (CMOS) process with limited supply voltage levels is used. These generators are suitable to provide a simple conversion of illuminance to frequency of oscillation that can be employed for illuminance measurement and sensing in the agriculture applications. Experimental measurements proved that the proposed concept is usable for sensing of illuminance in the range from 1 up to 500 lx. The change of illuminance within this range causes driving of bias current between 21 and 52 μA that adjusts repeating frequency between 70 and 154 kHz with an error up to 10% between the expected and real cases.

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Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

Section: Generator Based On Schmitt Trigger With Ota and Current Contmentioning

confidence: 99%

See 1 more Smart Citation

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Šotner

Jeřábek

Polák

et al. 2020

Sensors

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show abstract

“…4. In [41], [46] Siripruchyanun, M et al proposed waveform generators using OTA and MO-VDTA. Pspice has been used to simulate the circuit presented in the above cited literature.…”

Section: In [35] Sotner R Et Al Have Presented Zc-cg-vdccmentioning

confidence: 99%

A novel square wave generator based on the translinear circuit scheme of second generation current controlled current conveyor-CCCII

et al. 2019

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A robust square wave generator employing a sole capacitor and two resistors has been presented in this study. Low power as well as popular translinear circuit scheme of Second generation current controlled current conveyor-CCCII has been taken as an active element to implement the proposed square wave generator. CCCII inhibits promising features like availability of three mutually independently and electronically adjustable parameters corresponding transconductance (g m), intrinsic resistance (r) of the current input terminal and current gain between two terminals) that are very prevalent for control applications accepted currently. The operating frequency of the proposed model has been analyzed with respect to the passive components present there, with no exposure of output signals to the thermal voltage (V T). Electrical/Device properties (like Noise, Threshold, area etc.) of the proposed circuit have also been discussed in this work. The simulation work was carried out on Synopsis Hspice tool (v-2008.03) from Avant. Satisfying results with anticipation of theoretical and simulated results, including precision (consistency assessment) with Pareto analysis (Ist order Best Test flavored by Decision making analysis) were observed during the study. The 45 nm BSIM CMOS modelling parameters were adopted to prove the theory. The elementary purpose of using such parameters is to maximize the circuit drive and lowering the leakage current. Another purpose of using these modelling parameters is to enhance the realization of the proposed circuit in the form of chip die and further get it fabricated in custom Integrated circuit(IC) form, from a Standard local foundry. Maximum power consumption of the circuit is 600 µW, with ± 1 V rail to rail operating voltages. Keywords Square wave generators • CCCII based novel MOS devices • Monte Carlo analysis • Voltage and current mode circuits • Low power and low voltage CMOS circuits

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“…In view of carrying such specific properties, the VDTA has been treated as the most favored element in use for various applications. Some of the applications include filters, oscillators, simulation of inductors and capacitors which use one VDTA block taking the help of capacitors [22][23][24][25][26][27][28][29][30][31][32][33]. Some of the current mode devices are furnished below.…”

Section: Historical Background Of Carbon Nano Tube Field Effect Transmentioning

confidence: 99%

A Novel Simple Differentiator Circuit Based on Carbon Nano Tube Field Effect Transistors Voltage Difference Transconductance Amplifier

Bhargav

Saini

2019

MNS

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: This paper brings in a new design, namely, voltage mode differentiator with an active element, Carbon Nanotube Field Effect Transistors Voltage Difference Transconductance Amplifier (CNVDTA). The circuit thus proposed needs one Carbon Nanotube Field Effect Transistors Voltage Difference Transconductance Amplifier (CNVDTA) element and a single capacitor. While fabricating IC’s in VLSI design, the proposed circuit proves more adaptable and applicable with the anticipated results. Methods: The proposed CNVDTA based voltage mode differentiator in CNFET technology was simulated at 32 nm at a voltage supply of ±0.9 V using the Cadence Virtuoso CAD tool. Results: It is also reported that the proposed circuit would function with ±0.9 V supply voltage and would also take care of the bias current of the order of 150 µA. Further, on the part of the transconductance (gm), it is electronically tunable with the help of bias current. Conclusion: The CNVDTA based differentiator has been found to be very useful in the triggering circuit of CRO’s, wave shaping circuits, power control circuits etc. It is also found useful in detecting the high-frequency components in the input signals.

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A Current-mode Square/Triangular Ware Generator Based on Multiple-output VDTAs

Cited by 11 publications

References 6 publications

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

A novel square wave generator based on the translinear circuit scheme of second generation current controlled current conveyor-CCCII

A Novel Simple Differentiator Circuit Based on Carbon Nano Tube Field Effect Transistors Voltage Difference Transconductance Amplifier

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