论文标题
级联的施密特 - 触发阶段是否改善了亚稳态行为？
Does Cascading Schmitt-Trigger Stages Improve the Metastable Behavior?
论文作者
论文摘要
Schmitt-trigger阶段是选择过度过渡时间或明显噪声的输入电压稳健离散化的选择方法。但是，它们可能会遭受稳定性。基于触发器阶段级联的经验可以显着改善其整体亚稳定性硬度，在本文中，我们详细介绍了Schmitt-Trigger阶段的级联是否可以获得相似的增益。我们执行了一个理论分析，该分析由单个施密特触发阶段的现有标准性模型支持，并阐述了有关Schmitt-Trigger Cascade行为的一些主张。这些主张表明，从第一阶段到第二阶段，能稳定性的发生确实降低了，这表明有所改善。然而，不利的一面是，很明显，仍然不能完全排除稳定性，在某些情况下，级联反应的行为可能对给定应用程序有利，例如通过引入看似可aus的过渡。我们通过广泛的HSPICE模拟来验证我们的发现，其中我们直接涵盖了我们最重要的主张。
Schmitt-Trigger stages are the method of choice for robust discretization of input voltages with excessive transition times or significant noise. However, they may suffer from metastability. Based on the experience that the cascading of flip-flop stages yields a dramatic improvement of their overall metastability hardness, in this paper we elaborate on the question whether the cascading of Schmitt-Trigger stages can obtain a similar gain. We perform a theoretic analysis that is backed up by an existing metastability model for a single Schmitt-Trigger stage and elaborate some claims about the behavior of a Schmitt-Trigger cascade. These claims suggest that the occurrence of metastability is indeed reduced from the first stage to the second which suggests an improvement. On the downside, however, it becomes clear that metastability can still not be completely ruled out, and in some cases the behavior of the cascade may be less beneficial for a given application, e.g. by introducing seemingly acausal transitions. We validate our findings by extensive HSPICE simulations in which we directly cover our most important claims.
