High performance carbon nanotube based folded cascode operational transconductance amplifiers

Nizamuddin, M.; Loan, Sajad A.; Murshid, Asim M.

doi:10.1109/mspct.2017.8363968

Cited by 8 publications

(14 citation statements)

References 13 publications

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“…The source and drain regions are like the ones as in the conventional MOSFET; however, the channel has undoped CNTs. 14,15,24 The number of CNTs (N), CNT pitch (S), and diameter of CNTs (D CNT ) are important parameters to optimize the performance of a CNTFET. Due to the use of CNTs, a CNTFET outperforms the conventional MOSFETS significantly, in terms of drive capability, speed, packing density, and low power consumption.…”

Section: Carbon Nanotube Field Effect Transistormentioning

confidence: 99%

“…22,37,38 Furthermore, various parameters of a CNTFET, like the number of CNTs (N), inter-CNT pitch (S), diameter of a CNT (D CNT ), CNT width (W), and band gap (E g ) can be optimized to optimize the performance of the proposed circuitry. These parameters are given by the following equation 24 :…”

Section: Carbon Nanotube Field Effect Transistormentioning

confidence: 99%

“…The CNT diameter not only alters the threshold voltage but also changes the source/drain series resistances. The diameter of a CNT influences the threshold voltage (V th ) and bandgap energy or energy gap (E g ) of CNT significantly and is given by the following equation, 24,25…”

Section: Performance Evaluation By Varying Cnt Diametermentioning

confidence: 99%

“…[16][17][18][19][20][21][22][23] Various analog signal processing blocks employing CNTs have been realized. These include CNTFET-based operational transconductance amplifier (OTA), 14,24 CNTFET-based multistage differential amplifier, 15 dual output CC 25 and so on. However, CNTFET-based circuitry too have many limitations, like CNTFET-based OTA suffers from lower BW issue, 24 CNTFET-based CC are unable to realize the ideal characteristics CCII 25 and CNTFET based OP-AMP suffers from poor gain BW.…”

Section: Introductionmentioning

confidence: 99%

“…These include CNTFET-based operational transconductance amplifier (OTA), 14,24 CNTFET-based multistage differential amplifier, 15 dual output CC 25 and so on. However, CNTFET-based circuitry too have many limitations, like CNTFET-based OTA suffers from lower BW issue, 24 CNTFET-based CC are unable to realize the ideal characteristics CCII 25 and CNTFET based OP-AMP suffers from poor gain BW. 13 In this work, we propose and simulate a new CNTFET-based class AB second generation current conveyor (CCII).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

Jogad

Loan

Afzal

et al. 2020

Int J Numerical Modelling

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In this work, we design and simulate a new class AB second generation current conveyor (CCII) employing 32 nm technology node carbon nanotube field effect transistors (CNTFET). The performance of the proposed CNTFET based class AB CCII (CNTFET-CCII) has been optimized by altering the number of carbon nanotubes (CNTs) (N), CNT pitch (S), and CNT diameter (D CNT). The proposed CCII has been compared with the conventional CMOS-based class AB CCII (CMOS-CCII). The simulation study has revealed that in the proposed CCII, the voltage and current bandwidth (BW) have enhanced by two orders, terminal X resistance

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Section: Carbon Nanotube Field Effect Transistormentioning

confidence: 99%

Section: Carbon Nanotube Field Effect Transistormentioning

confidence: 99%

Section: Performance Evaluation By Varying Cnt Diametermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

Jogad

Loan

Afzal

et al. 2020

Int J Numerical Modelling

Self Cite

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CNTFET‐based active grounded inductor using positive and negative current conveyors and applications

Jogad

Alkhammash

Afzal

et al. 2021

Int J Numerical Modelling

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In this work, we design and simulate novel 32 nm carbon nanotube field effect transistor (CNTFET) as well as complementary metal oxide semiconductor (CMOS)‐based negative class AB second generation current conveyors (CC) (CNTFET‐CCII and CMOS‐CCII−). The comparative analyses of various performance measuring parameters of both these CCII's have been performed. A significant improvement in current and voltage bandwidths, terminal X and Y impedances at lesser total harmonic distortions and reduced power consumption have been observed in the proposed CNTFET‐based CCII− in comparison to its CMOS‐based counterpart. Further, a CNTFET‐based active grounded inductor (AGI) has been designed and simulated for the first time using the proposed CNTFET‐CCII− and our recently designed CNTFET‐CCII+ and has been compared with the CMOS‐based AGI. To validate the performance of the simulated AGI's, single input multi output current mode filter and third‐order high pass Butterworth filter have also been designed and simulated. The simulation results reveal that the performance of the CNTFET‐AGI‐based applications are close to ideal response with less power consumption and temperature insensitivity with reduced active chip die area of 0.16 μm2 and can be efficiently used for low voltage, low power, and high frequency applications.

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Design and analysis of 4-bit low-power, high-performance current steering DAC implemented using CNT-GDI logic

Mujumdar,

Afzal,

Loan

2024

AEU - International Journal of Electronics and Communications

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High performance carbon nanotube based folded cascode operational transconductance amplifiers

Cited by 8 publications

References 13 publications

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

CNTFETbased classABcurrent conveyorII: Design, analysis and waveform generator applications

CNTFET‐based active grounded inductor using positive and negative current conveyors and applications

Design and analysis of 4-bit low-power, high-performance current steering DAC implemented using CNT-GDI logic

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