Common-Centroid Layout for Active and Passive Devices: A Review and the Road Ahead

Nibedita Karmokar, Meghna Madhusudan, Arvind Sharma, Ramesh Harjani, Mark Po-Hung Lin, Sachin S. Sapatnekar

20222022 27th Asia and South Pacific Design Automation Conference (ASP-DAC)18 citationsDOI

Abstract

This paper presents an overview of common-centroid (CC) layout styles, used in analog designs to overcome the impact of systematic variations. CC layouts must be carefully engineered to minimize the impact of mismatch. Algorithms for CC layout must be aware of routing parasitics, layout-dependent effects (for active devices), and the performance impact of layout choices. The optimal CC layout further depends on factors such as the choice of the unit device and the relative impact of uncorrelated and systematic variations. The paper also examines scenarios where non-CC layouts may be preferable to CC layouts.

Topics & Concepts

CentroidParasitic extractionPage layoutComputer scienceIntegrated circuit layoutUncorrelatedRouting (electronic design automation)IC layout editorComputer engineeringElectronic engineeringEngineeringEmbedded systemCircuit extractionArtificial intelligenceIntegrated circuitElectrical engineeringMathematicsBusinessEquivalent circuitStatisticsVoltageOperating systemAdvertisingVLSI and Analog Circuit TestingVLSI and FPGA Design TechniquesAnalog and Mixed-Signal Circuit Design