Slew of a Waveform

最新推荐文章于 2023-12-18 14:22:39 发布

mikiah

最新推荐文章于 2023-12-18 14:22:39 发布

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分类专栏： STA 文章标签： transition signal output

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本文深入探讨了静态时序分析中的信号过渡速率概念，通过测量信号从特定电平到另一个特定电平所需的时间来评估上升或下降波形的速度。解释了过渡时间与信号斜率之间的倒数关系，并使用典型CMOS单元的波形图说明了这一过程。重点在于理解如何从波形中准确确定信号过渡的开始和结束点，对于设计高性能电路至关重要。

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A slew rate is defined as a rate of change. In static timing analysis, the rising or falling waveforms are measured in terms of whether the transition is slow or fast. The slew is typically measured in terms of the transition time, that is, the time it takes for a signal to transition between two specific levels. Note that the transition time is actually inverse of the slew rate - the larger the transition time, the slower the slew, and vice versa. Figure 2-10 illustrates a typical waveform at the output of a CMOS cell. The waveformsnat the ends are asymptotic and it is hard to determine the exact start and

end points of the transition.