Hierarchical placement with layout constraints

Po-Hung Lin*, Yao Wen Chang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

3 Scopus citations


In analog layout design, devices are required to be placed with matching, symmetry, and proximity constraints to reduce parasitic coupling effects and improve circuit performance. In addition to these basic placement constraints, there exist hierarchical symmetry and hierarchical proximity constraints due to circuit and layout design hierarchies. This chapter first introduces the hierarchical constraints induced by circuit and layout design hierarchies, and then presents a hierarchical placement approach to better consider these hierarchical constraints and effectively reduce the search space.

Original languageEnglish
Title of host publicationAnalog Layout Synthesis
Subtitle of host publicationA Survey of Topological Approaches
PublisherSpringer US
Number of pages34
ISBN (Print)9781441969316
StatePublished - 1 Dec 2011

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