ICTACT Journal on Microelectronics

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Ultra-Low Power Voltage Reference Circuit Utilizing a Threshold Voltage Difference Between Two CNFETs


Affiliations
1 Department of Electronics and Telecommunication Engineering, Matoshri College of Engineering and Research Center, India
2 Department of Electronics and Telecommunication Engineering, Vishwabharati Academy College of Engineering, India
     

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This paper proposes a voltage reference circuit that exploits sub-threshold conduction and threshold voltage difference between two carbon nanotube field effect transistors (CNFETs) to achieve ultra-low power consumption. The circuit produces a reference voltage of 203mV at 0.5V supply voltage, consumes only 3.42pW power and exhibits excellent temperature and power supply independence. The robustness of the proposed circuit for variations in carbon nanotube (CNT) diameter and inter CNT pitch variations is also presented with Monte Carlo simulations.

Keywords

Carbon Nanotube Field Effect Transistor, Ultra-Low Power Circuits, Voltage References.
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  • Ultra-Low Power Voltage Reference Circuit Utilizing a Threshold Voltage Difference Between Two CNFETs

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Authors

S. B. Rahane
Department of Electronics and Telecommunication Engineering, Matoshri College of Engineering and Research Center, India
A. K. Kureshi
Department of Electronics and Telecommunication Engineering, Vishwabharati Academy College of Engineering, India
G. K. Kharate
Department of Electronics and Telecommunication Engineering, Matoshri College of Engineering and Research Center, India

Abstract


This paper proposes a voltage reference circuit that exploits sub-threshold conduction and threshold voltage difference between two carbon nanotube field effect transistors (CNFETs) to achieve ultra-low power consumption. The circuit produces a reference voltage of 203mV at 0.5V supply voltage, consumes only 3.42pW power and exhibits excellent temperature and power supply independence. The robustness of the proposed circuit for variations in carbon nanotube (CNT) diameter and inter CNT pitch variations is also presented with Monte Carlo simulations.

Keywords


Carbon Nanotube Field Effect Transistor, Ultra-Low Power Circuits, Voltage References.

References