先进老化分析
核心优势
- 结合特定工艺偏差模型和老化模型
- 老化仿真在标称值上运行1次,得到数据重复运用于其他的迭代
- 分析数据并比较工艺偏差对老化效果的影响
- 灵活使用专有的计算方法进行带自热影响的老化分析
- 支持版图依赖效应(LDE) 计算和用户自定义的退化模型
- 包含BTI恢复效应
- 建模內含HCI退化饱和效应
Designers must find a way to accurately predict the effect of stress over the lifetime of a device, otherwise device wear-out can result in early end-of-life failure. Designers have had the enormous challenge of accounting for each source of device degradation in isolation, then using reliability analysis to estimate device degradation due to electrical stress followed by estimating the reduced lifetime based on estimated die temperature and the effect of process variation.
The Cadence® Legato™ Reliability Solution is the industry’s first solution to provide a holistic approach to reliability analysis. The solution unifies advanced aging analyses, so designers can include all the sources of device degradation in one place for their analysis including traditional electrical stress-based aging analysis, predictive models of aging effects, realistic stress conditions based on mission profiles, accelerated aging based on device operating temperature instead of the using the ambient temperature, and direct calculation of the process variation on aging instead of using estimated derating.
![](https://newstaging.cadence.com/content/dam/cadence-www/global/en_US/diagrams/tools/custom-ic-analog-rf-design/cic-legato-reliability-advanced-aging.png)
Traditional aging models developed for legacy nodes and planar CMOS transistors are unable to analyze new technologies like advanced nodes and FinFET transistors. The Legato Reliability Solution is a one-stop-shop solution that provides old and new device aging models based on the most recent research in device physics to better predict device degradation due to Hot Carrier Injection (HCI) and Bias Temperature Instability (BTI). With the Legato Reliability Solution, designers are now able to better predict advanced aging analysis over the operating lifetime of their designs.