Fault Vulnerability Ranking of Transistors in Analog Integrated Circuits using AC Analysis

Shan Pavan Pani Krishna Garapati, Sayandeep Sanyal, A. Patra, P. Dasgupta, M. Bhattacharya
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引用次数: 2

Abstract

With the increasing complexity of analog circuits in modern Systems on Chip (SOC), and their applications in safety-critical domains, the task of manufacturing fault-free SOCs is becoming more complex. The SOCs need to be designed to be more robust to parametric deviations caused during the fabrication process, any external disturbance or over a period of time due to ageing. In this paper, we propose a novel approach for ranking the transistors in an analog circuit based on their robustness to parametric deviations. We define the concept of fault vulnerability and introduce an associated quantitative measure to develop the ranking. We use time-efficient AC analysis along with a binary search technique for computing this measure. We carry out experiments on some circuits designed in-house and on three of the recently proposed ITC’17 AMS benchmarks. The results indicate that the proposed approach is computationally efficient and quite effective in ranking the transistors in terms of their fault vulnerability.
基于交流分析的模拟集成电路晶体管故障脆弱性排序
随着现代片上系统(SOC)中模拟电路的日益复杂,以及它们在安全关键领域的应用,制造无故障SOC的任务变得越来越复杂。soc需要设计得对制造过程中产生的参数偏差、任何外部干扰或由于老化而导致的一段时间内的参数偏差更强。在本文中,我们提出了一种基于模拟电路中晶体管对参数偏差的鲁棒性对其进行排序的新方法。我们定义了故障脆弱性的概念,并引入了相关的定量度量来进行排序。我们使用省时的AC分析以及二元搜索技术来计算此度量。我们在一些内部设计的电路和最近提出的ITC ' 17 AMS基准中的三个上进行了实验。结果表明,该方法计算效率高,对晶体管的故障易损性排序非常有效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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