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A new algorithm for ESD protection device extraction based on subgraph isomorphism | IEEE Conference Publication | IEEE Xplore

A new algorithm for ESD protection device extraction based on subgraph isomorphism


Abstract:

An efficient device recognition algorithm is critical to ESD (electrostatic discharge) protection device extraction. In this paper, we propose a new algorithm based on a ...Show More

Abstract:

An efficient device recognition algorithm is critical to ESD (electrostatic discharge) protection device extraction. In this paper, we propose a new algorithm based on a subgraph isomorphism, where subgraphs appearing multiple times within the same or different device model graphs are presented once only, thus reducing computational effort of detecting them in an input layout file. The mechanism to detect and reduce redundant devices is also presented. The algorithm is implemented in a new CAD tool, ESDExtractor, developed to extract ESD devices of arbitrary shapes. Examples are provided to demonstrate the application of ESDExtractor and efficiency of the new algorithm.
Date of Conference: 28-31 October 2002
Date Added to IEEE Xplore: 06 January 2003
Print ISBN:0-7803-7690-0
Conference Location: Denpasar, Indonesia

1. INTRODUCTION: ESD Extractor

ESD is an extremely fast discharging phenomenon occurring when two charged objects are brought into proximity and electrostatic charges transfer in between [1]. In order to avoid ESD damages, ESD protection circuits are required for practical IC products [1]. An ESD protection layout extractor is critically important to chip level ESD protection design verification since it makes it feasible to perform further layout-schematic checking and ESD circuit simulation at whole chip level.

References

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