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Low-Swing Signaling on Monolithically Integrated Global Graphene Interconnects

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4 Author(s)
Kyeong-Jae Lee ; Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA, USA ; Qazi, M. ; Kong, Jing ; Chandrakasan, A.P.

In this paper, we characterize the performance of monolithically integrated graphene interconnects on a prototype 0.35-μm CMOS chip. The test chip implements an array of transmitter/receivers to analyze the end-to-end data communication on graphene wires. Large-area graphene sheets are first grown by chemical vapor deposition, which are then subsequently processed into narrow wires up to 1 mm in length. A low-swing signaling technique is applied, which results in a transmitter energy of 0.3-0.7 pJ/b·mm-1 and a total energy of 2.4-5.2 pJ/b·mm-1. Bit error rates below 2 × 10-10 are measured using a 231 - 1 pseudorandom binary sequence. Minimum voltage swings of 100 mV at 1.5-V supply and 500 mV at 3.3-V supply have also been demonstrated. At present, the graphene wire is largely limited by its growth quality and high sheet resistance.

Published in:

Electron Devices, IEEE Transactions on  (Volume:57 ,  Issue: 12 )

Date of Publication:

Dec. 2010

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