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Design and sensitivity analysis of a new current-mode sense amplifier for low-power SRAM

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Design and sensitivity analysis of a new current-mode sense amplifier for low-power SRAM

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Title: Design and sensitivity analysis of a new current-mode sense amplifier for low-power SRAM
Author: Do, Anh Tuan; Kong, Zhi Hui; Yeo, Kiat Seng; Low, Jeremy Yung Shern
Copyright year: 2009
Abstract: A new current-mode sense amplifier is presented. It extensively utilizes the cross-coupled inverters for both local and global sensing stages, hence achieving ultra low-power and ultra high-speed properties simultaneously. Its sensing delay and power consumption are almost independent of the bit- and data-line capacitances. Extensive post-layout simulations, based on an industry standard 1 V/65-nm CMOS technology, have verified that the new design outperforms other designs in comparison by at least 27% in terms of speed and 30% in terms of power consumption. Sensitivity analysis has proven that the new design offers the best reliability with the smallest standard deviation and bit-error-rate (BER). Four 32 32-bit SRAM macros have been used to validate the proposed design, in comparison with three other circuit topologies. The new design can operate at a maximum frequency of 1.25 GHz at 1 V supply voltage and a minimum supply voltage of 0.2 V. These attributes of the proposed circuit make it a wise choice for contemporary high-complexity systems where reliability and power consumption are of major concerns.
Subject: DRNTU::Engineering::Electrical and electronic engineering.
Type: Journal Article
Series/ Journal Title: IEEE transactions on very large scale integration (VLSI) systems
School: School of Electrical and Electronic Engineering
Rights: © 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
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