Burin, J., Afsah, A., & Steininger, A. (2026). Amplifier Circuit-Based Metastability Model. In 2026 30th International Symposium on Asynchronous Circuits and Systems (ASYNC) (pp. 74–82). IEEE. https://doi.org/10.1109/ASYNC69614.2026.00020
Marino (IEEE ToC,1977) developed an equivalent circuit to describe the output behavior of a Schmitt Trigger. This beautifully simple model has proven specifically useful for investigating the metastable regions of this device. However, with its few and idealized analog components, it fails to reflect certain (metastable) behaviors of real-world Schmitt Trigger implementations. In this paper we augment Marino’s approach by amplifiers in the feedback- and in the input path to extend its modeling capabilities towards such behaviors. Our simulation results confirm the desired expressive power of our new model that not only allows to cover a wider range of observed Schmitt Trigger output characteristics, but also facilitates modeling additional related other circuits, e.g., the D-latch. The characterization effort is still low, relying on at most seven values that can be extracted from the (meta)stable states.
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Research Areas:
Computer Engineering and Software-Intensive Systems: 100%
