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Supply Voltage Adaptive Low-Power Circuit Design

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2 Author(s)
Kirolos, S. ; Dept. of ECE, Rice Univ., Houston, TX ; Massoud, Y.

In this paper, we present a circuit design that is capable of responding to changes in the power supply voltage and adjust the gate size-ratio accordingly for minimum energy operation. The dynamically adjustable gate size-ratio allows the gate to preserve a symmetric voltage transfer characteristic at both normal supply and subthreshold operation. This translates to maximized noise margins over the whole range of the supply voltage. Simulation results show that the performance of the proposed circuit is superior to fixed gate sizes aimed at fixed supply operation. The proposed adaptive gate circuit design provide up to 6times reduction in the power-delay product in comparison with the fixed size gate

Published in:

Design, Applications, Integration and Software, 2006 IEEE Dallas/CAS Workshop on

Date of Conference:

Oct. 2006