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Vth-Variation Compensation of Multiple-Valued Current-Mode Circuit Using TMR Devices

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4 Author(s)
Hirosaki, A. ; Res. Inst. of Electr. Commun., Tohoku Univ., Sendai ; Miura, M. ; Matsumoto, A. ; Hanyu, T.

A compensation method against a threshold-voltage (Vth) variation using tunneling magnetoresistive (TMR) devices, is proposed for a deep-submicron VLSI. The influence of the Vth variation in a single MOS transistor can be neglected by adjusting the source voltage of the MOS transistor. The desired circuit behavior is obtained by programming the resistance value of a TMR device which is connected to the MOS transistor in series. By using HSPICE simulation under a 90nm CMOS technology, it is demonstrated that a radix-2 signed-digit adder using the proposed method is robust against the Vth variation.

Published in:

Multiple Valued Logic, 2008. ISMVL 2008. 38th International Symposium on

Date of Conference:

22-24 May 2008