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Analog circuit shielding routing algorithm based on net classification

Published: 18 August 2010 Publication History

Abstract

Analog signals are more sensitive to crosstalk than digital signals, resulting in instability of analog circuits. To eliminate coupling, it is common practice to insert shielding wires on one or both sides of critical signals. In this paper, a novel analog circuit shielding routing algorithm based on net classification is proposed. Circuit performance requirements are transformed into geometric properties of nets according to the result of placement, and different shielding wire routing algorithms are designed to meet these geometric properties. A* algorithm is adopted to route the critical nets, and shielding wires are added at the same time. Maze algorithm is used to route the P/G nets and other general nets. Experimental results show that the router is efficient in routing and effective in reducing crosstalk. Although capacitive load and routing area increase, the resulting coupling is negligible and the circuit performance is significantly improved.

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      cover image ACM Conferences
      ISLPED '10: Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
      August 2010
      458 pages
      ISBN:9781450301466
      DOI:10.1145/1840845
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 18 August 2010

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      Author Tags

      1. A* algorithm
      2. analog routing
      3. shielding routing

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      • (2023)Analog Integrated Circuit Routing Techniques: An Extensive ReviewIEEE Access10.1109/ACCESS.2023.326548111(35965-35983)Online publication date: 2023
      • (2022)Automatic Analog and Mixed-Signal Physical Design Review2022 10th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)10.1109/JAC-ECC56395.2022.10043953(58-63)Online publication date: 19-Dec-2022
      • (2022)CAD for Analog/Mixed‐Signal Integrated CircuitsAdvances in Semiconductor Technologies10.1002/9781119869610.ch3(43-60)Online publication date: 30-Sep-2022
      • (2019)GeniusRoute: A New Analog Routing Paradigm Using Generative Neural Network Guidance2019 IEEE/ACM International Conference on Computer-Aided Design (ICCAD)10.1109/ICCAD45719.2019.8942164(1-8)Online publication date: Nov-2019
      • (2019)MAGICAL: Toward Fully Automated Analog IC Layout Leveraging Human and Machine Intelligence: Invited Paper2019 IEEE/ACM International Conference on Computer-Aided Design (ICCAD)10.1109/ICCAD45719.2019.8942060(1-8)Online publication date: Nov-2019
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      • (2016)SWARM: A Self-Organization Approach for Layout Automation in Analog IC DesignInternational Journal of Electronics and Electrical Engineering10.18178/ijeee.4.5.374-385(374-385)Online publication date: 2016
      • (2016)Recent research development and new challenges in analog layout synthesis2016 21st Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASPDAC.2016.7428080(617-622)Online publication date: Jan-2016
      • (2015)Data-Dependent Delays as a Barrier Against Power AttacksIEEE Transactions on Circuits and Systems I: Regular Papers10.1109/TCSI.2015.245237162:8(2069-2078)Online publication date: Aug-2015
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