CAREER: Hierarchical Process Variability Analysis of Analog Circuits Geared for Test and Diagnosis

ozev， SuleDuke大学职业：面向测试和分析的模拟电路的分层过程可变性分析电子系统正以越来越快的速度扩散到社会的结构中。甚至在一项新设备技术进入大规模生产之前，科学家们就开始研究下一代技术。不幸的是，控制处理环境的能力接近其自然极限。这种过程控制能力下降的一个直接结果是组件参数的变异性增加。模拟电子电路的性能特别容易受到这种工艺变化的影响。随着对工艺控制的减弱，对制造零件进行有效和高效的测试变得越来越重要。测试过程对于确保产品质量和产品在全球市场上的最终成功变得更加重要。由于追求更高性能而导致的冲突，同时过程可变性正在增加，这表明迫切需要新的模拟电路测试自动化方法，这些方法最终将被行业采用。这个项目的目标是开发面向测试和诊断自动化的过程可变性分析的分层方法。通过确定无故障电路和多种不同故障的各中间参数的方差，可以开发出高效的基于故障的测试和诊断方法。在故障注入期间，只有系统构建块的一个子集会改变。通过分层分析方法，电路的变化将提示只对需要更新的信息进行重新处理，以确保效率。虽然基于故障的数字测试和诊断方法已经被业界广泛接受，但在模拟领域仍存在阻力，主要原因是设计目标与构成故障的定义之间存在差异。在有效的过程可变性分析的帮助下，本项目旨在通过将故障注入与通过/失败标准分离来突破这一障碍。将通过/失败标准与电路的规格相一致，将在模拟领域启动更广泛的基于故障的自动化测试和诊断。

0545456Ozev, SuleDuke UniversityCAREER: Hierarchical Process Variability Analysis of Analog Circutis Geared for Test and DiganosisElectronic systems are proliferating into the fabric of the society with an ever increasing speed. Even before one new device technology goes into mass manufacturing, scientists start working on next generation technologies. Unfortunately, the ability to control the processing environment nears its natural limits. One direct result of this diminishing process control capability is the increasing variability in component parameters. The performance of analog electronic circuits is especially susceptible to such process variations. As the control over the process diminishes, testing the manufactured parts effectively and efficiently becomes increasingly more important. The testing process becomes all the more essential to ensure product quality and eventual success of the products in the global marketplace. The conflict resulting from the push towards higher performance while the process variability is increasing indicates a dire need for new approaches for the test automation of analog circuits that will be eventually adopted by the industry. The goal of this project is to develop hierarchical methods for process variability analysis that are geared towards test and diagnosis automation. By determining the variance of each intermediate parameter for the fault-free circuit and for many distinct faults, efficient fault-based test and diagnosis approaches can be developed. During fault injection, only a subset of the system building blocks will change. Through the hierarchical analysis approach, the changes in the circuit will prompt reprocessing of only the information that needs to be updated to ensure efficiency. While digital fault-based test and diagnosis methods have enjoyed widespread acceptance from the industry, there has been a resistance in the analog domain mostly due to the discrepancy between the design goals and the definition of what constitutes a fault. With the help of efficient process variability analysis, this project aims at breaking through this barrier by disassociating the fault injection from the pass/fail criteria. Aligning the pass/fail criteria with the specifications of the circuit will initiate a wider acceptance of automated fault-based test and diagnosis in the analog domain.