SymmTop: A Symmetric Circuit Topology for Ultra Low Power Wide Temperature-Range Applications

被引:1
作者
Weinberg, Elena K. [1 ]
Stan, Mircea R. [1 ]
机构
[1] Univ Virginia, Charles L Brown Dept Elect & Comp Engn, Charlottesville, VA 22904 USA
来源
2015 IEEE COMPUTER SOCIETY ANNUAL SYMPOSIUM ON VLSI | 2015年
关键词
sub-threshold; wide temperature-range; nanoscale CMOS; ultra-low power; energy harvesting; 28nm FDSOI;
D O I
10.1109/ISVLSI.2015.105
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
A major roadblock for ultra-low power (ULP) circuits lies in increased sensitivity to process variations at near- and sub-VT. Additionally, temperature variations can be detrimental to circuit functionality for energy harvesting applications operating in outdoor environments. This vulnerability to variations at the device level is exacerbated by imbalances between pull-up (PUN) and pull-down (PDN) networks at the circuit level. In this paper, we propose SymmTop, a symmetric circuit topology in conjunction with a biasing scheme that maintains symmetrically robust operation of ULP energy harvesting systems in a variety of climates, including extreme temperatures. Through noise-analysis and Monte Carlo (MC) simulations performed in a commercial 28nm Fully Depleted Silicon On Insulator (FDSOI) technology, we demonstrate the robustness to variations and extreme temperature ranges of the proposed symmetric 2-to-1 multiplexer design (mirror mux) with bias compared to conventional 2-input NAND and NOR-based circuits. The linearity between temperature and bias makes this scheme easily applicable for programmable sensors in a variety of applications requiring environmental adaptability.
引用
收藏
页码:585 / 590
页数:6
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