Implementation of multi-valued logic, simultaneous literal operations with full CMOS current-mode threshold circuits

Temel, Turgay; Morgul, A.

doi:10.1049/el:20020127

“…11 Recent experiences show that respecting to design simplicity and larger dynamic range, the current mode approach could be considered as a good technique for MVL function and it can be also applied in higher radix MVL circuit design. [11][12][13] MOSFET technology has been the superior technology supplying the necessary potentials for implementing energy-efficient and dense VLSI circuits, meanwhile the necessity of scaling down the feature size of CMOS technology in Nano-ranges in today's nanometer VLSI 0 0 0 1 0 1 2 0 2 3 1 0 4 1 1 5 1 2 6 2 0 industry emerging, gives rise to numerous difficulties. To overcome these challenges, many nanometer devices such as Single Electron Transistor (SET), 14 Quantum-dot Cellular Automata (QCA), 15 and Carbon Nanotube Field Effect Transistor (CNTFET), 16 17 have been recently presented.…”

Section: Introductionmentioning

confidence: 99%

New Current-Mode Ternary Full Adder Circuits Based on Carbon Nanotube Field Effect Transistor Technology

Moradi

¹

,

Navi

²

2016

j comput theor nanosci

2

0

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This paper presents novel designs of a low power and complexity Current Mode 1-bit Full Adder cell based on CNTFET technology. Three main parts make key roles in their structure: (1) the first part which is responsible to convert current to voltage; (2) threshold detectors (TD); and (3) parallel paths through which the output currents flow. Utilizing CNTFET technology offers significant improvements in adjusting threshold voltages which is material for setting threshold detectors switching point, regarding its unique characterizations. These new designs benefit from the elimination of any constant current source unlike the former presented structures, which leads to the reduction of static power dissipation and better performance. The 2nd proposed current mode Ternary Full Adder operates faster than the 1st one in addition to the advantages of its simple design, less power consumption and transistor counts, while the 3rd design benefits from less transistor counts and simple design comparing the former designs.

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“…MVL allows more information to be transmitted over a given set of lines results in reducing complexity of interconnections, circuitry and chip area. In this logic, arithmetic operations can be executed more efficiently and faster by increasing the radix of the systems [1][2][3][4]. MVL is a mixture design techniques of binary logic and analogue signal processing which preserves noise advantages of a digital signal while processing greater information content in analogue mode.…”

mentioning

confidence: 99%

Five new MVL current mode differential absolute value circuits based on carbon nano-tube field effect transistors (CNTFETs)

Navi

¹

,

Jamalizadeh

²

,

Sharifi

³

et al. 2011

Nano-Micro Lett

0

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Carbon Nano-Tube Field Effect Transistors (CNTFETs) are being widely studied as possible successors to silicon MOSFETs. Using current mode has many advantages such as performing sum operation by means of a simple wired connection. Also, direction of the current can be used to exhibit the sign of digits. It is expected that the advantages of current mode approaches will become even more important with increased speed requirements and decreased supply voltage. In this paper, we present five new circuit designs for differential absolute value in current mode logic which have been simulated by CNTFET model. The considered base current for this model is 2 µA and supply voltage is 0.9 V. In all of our designs we used N-type CNTFET current mirrors which operate as truncated difference circuits. The operation of Differential Absolute Value circuit calculates the difference between two input currents and our circuit designs are operate in 8 logic levels.

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“…Recent experiences demonstrate that due to design simplicity and larger dynamic range, current mode approach is becoming attractive for the performing MVL function especially when the radix is larger than 3 and it can be also applied for higher radix MVL circuit design successfully [2,3,6]. Multi-valued current-mode circuits could be useful only if they can be implemented with today and tomorrow technologies [7].…”

mentioning

confidence: 99%

“…MVL allows more information to be transmitted over a given set of lines results in reducing complexity of interconnections, circuitry and chip area. In this logic, arithmetic operations can be executed more efficiently and faster by increasing the radix of the systems [1][2][3][4]. MVL is a mixture design techniques of binary logic and analogue signal processing which preserves noise advantages of a digital signal while processing greater information content in analogue mode.…”

mentioning

confidence: 99%

Five New MVL Current Mode Differential Absolute Value Circuits Based on Carbon Nano-tube Field Effect Transistors (CNTFETs)

Jamalizadeh

¹

,

Sharifi

²

,

Moaiyeri

³

et al. 2010

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Carbon Nano-Tube Field Effect Transistors (CNTFETs) are being widely studied as possible successors to silicon MOSFETs. Using current mode has many advantages such as performing sum operation by means of a simple wired connection. Also, direction of the current can be used to exhibit the sign of digits. It is expected that the advantages of current mode approaches will become even more important with increased speed requirements and decreased supply voltage. In this paper, we present five new circuit designs for differential absolute value in current mode logic which have been simulated by CNTFET model. The considered base current for this model is 2 µA and supply voltage is 0.9 V. In all of our designs we used N-type CNTFET current mirrors which operate as truncated difference circuits. The operation of Differential Absolute Value circuit calculates the difference between two input currents and our circuit designs are operate in 8 logic levels. The most important obstruction to reception of any such technology is due to encoding more than two levels of logic in the available room temperature for voltage swing is decreasedThe possible approach to solve this problem is to use the current mode techniques that use current as a signal carrier, either alone or in combination with voltage. Recent experiences demonstrate that due to design simplicity and larger dynamic range, current mode approach is becoming attractive for the performing MVL function especially when the radix is larger than 3 and it can be also applied for higher radix MVL circuit design successfully [2,3,6]. Multi-valued current-mode circuits could be useful only if they can be implemented with today and tomorrow technologies [7].For many years MOSFET has been used as a basic element of circuit designing. As the miniaturization of silicon based circuits reaches its physical limitations, molecular devices are becoming hopeful alternatives to the existing silicon technology

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Implementation of multi-valued logic, simultaneous literal operations with full CMOS current-mode threshold circuits

Cited by 17 publications

References 3 publications

New Current-Mode Ternary Full Adder Circuits Based on Carbon Nanotube Field Effect Transistor Technology

New Current-Mode Ternary Full Adder Circuits Based on Carbon Nanotube Field Effect Transistor Technology

Five new MVL current mode differential absolute value circuits based on carbon nano-tube field effect transistors (CNTFETs)

Five New MVL Current Mode Differential Absolute Value Circuits Based on Carbon Nano-tube Field Effect Transistors (CNTFETs)

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