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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Limitation of CMOS supply-voltage scaling by MOSFET threshold-voltage variation
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Limitation of CMOS supply-voltage scaling by MOSFET threshold-voltage variation

机译:MOSFET阈值电压变化限制CMOS电源电压缩放

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摘要

A fundamental limit of CMOS supply-voltage (V/sub cc/) scaling has been investigated and quantified as a function of the statistical variation of MOSFET threshold-voltage (V/sub T/). Based on the data extracted from a sub 0.5 /spl mu/m logic technology, the variation of ring-oscillator propagation-delay (T/sub d/) significantly increases as V/sub cc/ is scaled down towards the MOSFET V/sub T/. An empirical power-law relationship was then derived to describe the scattering of circuit speed (/spl Delta/T/sub pd/) as a function of MOSFET V/sub T/ variation (/spl Delta/V/sub T/) and (V/sub cc/-V/sub T/). Agreement between the model and the experimental data was established for V/sub cc/ values from 4.0 to 0.9 V. This fundamental limit of CMOS V/sub cc/, scaling poses an additional challenge for the design and manufacturing of high-performance, low-power portable systems and battery-based equipment.
机译:CMOS电源电压(V / sub cc /)缩放的基本极限已得到研究,并根据MOSFET阈值电压(V / sub T /)的统计变化进行了量化。根据从sub 0.5 / spl mu / m逻辑技术提取的数据,当V / sub cc /朝MOSFET V / sub方向缩小时,环形振荡器传播延迟(T / sub d /)的变化显着增加T /。然后,得出经验功率定律关系,以描述电路速度(/ spl Delta / T / sub pd /)随MOSFET V / sub T /变化(/ spl Delta / V / sub T /)和(V / sub cc / -V / sub T /)。建立了V / sub cc /值从4.0到0.9 V的模型与实验数据之间的一致性。CMOSV / sub cc /的这一基本限制,缩放对设计和制造高性能,低功耗提出了额外的挑战。功率便携式系统和基于电池的设备。

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