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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Performance limits of mixed analog/digital circuits with scaled MOSFETs
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Performance limits of mixed analog/digital circuits with scaled MOSFETs

机译:带比例MOSFET的混合模拟/数字电路的性能极限

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摘要

Constant electric field (CE), quasi-constant voltage (QCV), and constant voltage (CV) scaling laws are used as guides to MOSFET miniaturization. It is found that: 1) the QCV scaling law gives the best performance of the three scaling laws; 2) improvements in unity-gain bandwidth with scaling are less than predicted by the first-order theory due to mobility degradation; 3) gate length can be scaled down to 0.25 mu m while maintaining 10-bit accuracy for analog circuits (threshold variation limit); and 4) when gate lengths deviate from designed values, noise immunity for digital circuits is degraded mainly due to degradation in the saturation characteristics (drain-induced barrier lowering).
机译:恒定电场(CE),准恒定电压(QCV)和恒定电压(CV)缩放定律用作MOSFET小型化的指南。发现:1)QCV缩放定律在三个缩放定律中表现最佳; 2)由于迁移率降低,单位增益带宽随比例缩放的改善小于一阶理论的预测; 3)在保持模拟电路的10位精度(阈值变化极限)的同时,栅极长度可缩小至0.25μm; 4)当栅极长度偏离设计值时,数字电路的抗扰性会下降,这主要是由于饱和特性的下降(漏极引起的势垒降低)。

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