Scalable and Synthesizable Analog Circuits for Nanometer CMOS

ECCS-1128715PI：Un-Ku月球研究所：俄勒冈州立大学标题：可扩展和可合成的模拟电路纳米CMOSABSTRACT智能优点：模数转换器是模拟电路和数字模块的混合体。这种模拟密集型模块的模拟部分需要仔细设计和布局，通常是功耗和芯片面积的主要来源。这项研究的目标是开发这种全数字单元的模拟密集型模块，并使用Verilog等数字合成工具自动生成最终的芯片设计和版图。这项工作没有应对新的纳米工艺带来的挑战，而是试图分析和利用这些非理想的效果。将解决诸如最小尺寸晶体管的偏移量增加和本征增益降低等问题，并将在系统和电路级别探索新的方法来克服这些问题。将探索不同的结构，如随机模数转换器和过采样Delta-sigma调制器。半模拟模块，如基于逆变器的积分器，将通过现有的综合工具(如Verilog)或新开发的自动综合工具进行综合。通过合成半模拟和数字块，拟议的研究将进一步实现用于下一代纳米工艺的高度集成的模拟密集型块。通过综合工具对模块进行熟练的高级建模，可实现快速模拟和验证，并轻松迁移到另一个流程，从而减轻了传统模拟密集型模块所需的典型暴力重新设计任务。随处可得的综合数字信号处理系统也有望进一步提高这些新的可综合模拟功能数字结构的性能。广泛的影响：这项研究将出现的设计方法将模拟和数字功能融合在从软件程序到集成电路实现的系统自动综合中。这种模拟和数字信号处理的组合优化，纳入本科生和研究生教育，将重塑学生应对芯片设计挑战的方式。这样的基础将提供并推动学生在做出最终设计决定之前从更广泛的角度寻求解决方案。这项培训将培养出精通芯片设计的数字和模拟两个方面的全面和创新的未来工程师。将在著名期刊和会议上传播的研究成果将向广大公众进行曝光和教育，并进一步激励其他研究人员对这些新概念进行调查。此外，本提案中探讨的使能想法将直接影响大多数便携式和固定系统，这些系统是当今微电子市场的重要细分市场。利用全数字块自动合成数据转换器的能力可以允许在数字处理器、医疗和生物医学集成电路以及利用模数接口和数字信号处理的其他重要系统中使用这些结构，从而显著降低集成电路系统的成本。

ECCS-1128715PI: Un-Ku Moon Institution: Oregon State UniversityTitle: Scalable and Synthesizable Analog Circuits for Nanometer CMOSABSTRACTIntellectual Merit: Analog-to-digital converters are a mixture of analog circuits and digital blocks. The analog portion of such analog-intensive blocks requires careful design, layout, and are often the main source of power consumption and chip area. The objective of this research is to develop such analog-intensive blocks with all digital cells and automatically generate the final chip design and layout using digital synthesis tools such as Verilog. Instead of combating the challenges brought forth by the new nanometer processes, this work seeks to analyze and take advantage of these non-ideal effects. Problems such as increased offset and reduced intrinsic gain of the minimum size transistor will be addressed, and new approaches at both system and circuit levels will be explored to overcome these issues. Different structures such as stochastic analog-to-digital converter and oversampling delta-sigma modulator will be explored. Semi-analog blocks such as inverter-based integrator that would either be synthesized via existing synthesis tool (e.g. Verilog) or newly developed automatic synthesis tools will be explored. By synthesizing semi-analog and digital blocks, the proposed research will further enable highly integrated analog-intensive blocks for the next generation nanometer processes. Proficient high level modeling of blocks via synthesis tools allows fast simulation and verification, and effortless migration to another process, alleviating the typical brute-force redesigning tasks required in traditional analog-intensive blocks. A readily available synthesized digital signal processing system is also expected to further enhance the performance of these new synthesizable analog functioning digital structures.Broader Impacts: The design methodology that will emerge from this research merges both the analog and digital functionality in the automatic synthesis of a system from a software program to an integrated circuit realization. Such combined optimization of analog and digital signal processing, as incorporated into undergraduate and graduate education, will reshape the way students approach chip design challenges. Such foundation will provide and push students to seek solutions from a much wider perspective before making the final design decisions. This training will lead to well-rounded and innovative future engineers who are well versed in both digital and analog aspects of chip design. The research results to be disseminated in prestigious journals and conferences will expose and educate the public at large and further motivate these new concepts to be investigated by other researchers. Also, the enabling ideas explored in this proposal will directly affect most portable and stationary systems, which are important segments of the microelectronics market today. The ability to automatically synthesize data converters with all-digital blocks may allow the use of these structures in digital processors, medical and bio-medical integrated circuits, and other important systems utilizing analog-to-digital interface and digital signal processing, significantly lowering the cost of integrated circuit systems.