Low Power Sample and Hold using Current Conveyor Analog Switches Based on Carbon Nano-Tube Field Effect Transistor

Document Type : Original Article

Authors

1 Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.

2 Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

Abstract

In this paper, the transistor level of single-ended and differential low-power sample-hold is presented based on carbon nanotube field effect transistor technology using the advantages of second generation current conveyor blocks. The switching operation in the proposed sampl and holds is based on the structure of the second generation current conveyor, which means that it has the same function as the analog current-conveyor switches.The implementation of the proposed the sample and hold blocks with using advantages of carbon nanotube field effect transistors improves the performance sampl and hold circuit. The proposed sample and hold circuits have very low power consumption and high operating speed, and it also does not require a non-overlapping clock pulse signal. These proposed circuits have been implemented and simulated in HSPICE software using 32-nanometer carbon nanotube field effect transistor technology. The simulation results show that the power consumption of the differential sample and hold circuit is 13.45 μW, also the ENOB value of the differential sample and hold circuit for the sampling frequency of 2 GHz and the input frequency of 20 MHz is 11 bits. The FOM index of the proposed circuit is 0.61×10-6 (nJ/Bit.Samples).

Keywords

References

 
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