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Leakage Power Characteristics of Dynamic Circuits in Nanometer CMOS Technologies

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2 Author(s)
Z. Liu ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI ; V. Kursun

Temperature-dependent subthreshold and gate-oxide leakage power characteristics of domino logic circuits under the influence of process parameter variations are evaluated in this paper. Preferred input vectors and node voltage states that minimize the total leakage power consumption are identified at the lower and upper extremes of a typical die temperature spectrum. New low-leakage circuit design guidelines are presented based on the results. Significantly increased gate dielectric tunneling current, as described in this paper, dramatically changes the leakage power characteristics of dynamic circuits in deeply scaled nanometer CMOS technologies. Contrary to the previously published techniques, a charged dynamic-node voltage state with low inputs is preferred for reducing the total leakage power consumption in the most widely used types of single- and dual-threshold voltage domino gates, particularly at low die temperatures. Furthermore, leakage power savings provided by the dual-threshold voltage domino logic circuit techniques based on input gating are all together reduced due to the significance of gate dielectric tunneling in sub-45-nm CMOS technologies

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IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:53 ,  Issue: 8 )