Generating Analog IC Layouts with LAYGEN II

ISBN-13: 9783642331459 / Angielski / Miękka / 2012 / 98 str.

Ricardo M. F. Martins;Nuno C. C. Lourenco;Nuno C.G. Horta

Opis

This book presents an innovative methodology for the automatic generation of analog integrated circuits (ICs) layout, based on template descriptions and on evolutionary computational techniques. A design automation tool, LAYGEN II was implemented to validate the proposed approach giving special emphasis to reusability of expert design knowledge and to efficiency on retargeting operations.

Spis treści

Introduction.- Analog IC Design.- The Analog IC Design Automation Flow.- Analog IC Layout Automation.- Conclusions.- References.- State of the Art on Analog Layout Automation.- Placement.- Layout Constraints.- Chip Floorplan Representations.- Approaches.- Layout Generation Tools.- Closing the Gap between Electrical and Physical Design.- Layout-Aware Sizing Approaches.- Commercial Tools.- Automatic Layout Generation.- Design Flow based on Automatic Generation.- Sizing Task.- Layout Generation Design Flow.- Tool Architecture.- Graphical User Interface.- Technology Design Kit.- Hierarchical High Level Cell Description.- Placer.- Placer Architecture.- Template.- Template-based Generation Procedure.- Instantiation.- Pre-processing.- Biasing.- Abutment.- Post-processing.- Minimum Distances.- Guard Ring.- Router.- Router Architecture.- Template.- Optimization-based Generation Procedure.- Multiple Contacts.- Evolutionary Algorithm.- Chromosome.- Initialization.- Genetic Operator: Crossover.- Genetic Operator: Mutation.- Optimization Phases.- Internal Evaluation Procedure.- Short Circuit Checker.- Design Rule Checker.- Electrical Rule Checker.- Results.- Case Study I – Fully-Dynamic Comparator.- Template.- Layout Generation.- Placer.- Router.- Validation.- Case Study II – Single-Ended Folded Cascode Amplifier.- Template Hierarchy.- Layout Generation.- Retargeting for Different Sizes.- Retargeting for Different Technology.- Conclusions and Future Work.- References.