Universal Process Migration Solution of MAGICAL for Analog IC Layout Automation

Analog IC layout automation has been a hot topic in the field in recent years[1]. An open-source software MAGICAL developed by the University of Texas team is one of the most effective means to achieve this goal[2]. However, so far MAGICAL is only able to support one process library currently, i.e., TSMC 40nm, and this imposes limitations of its practical application. This work proposes a solution for the technology migration of MAGICAL, and this greatly broadens its application scenarios. Firstly, the MAGICAL's device generator is rewritten to take in the general design rule information of different technology nodes. Second, the parameters of a given technology's tech file are extracted by customerized Parameter Extractor. Finally, the extracted parameters are set into the device generator of MAGICAL as well as the LEF file used for routing. As demonstrations, layouts of multiple circuits such as inverter, Foleded Cascode, Nbooster and Pbooster are generated sucessfully using this new flow at different technology nodesincluding but not limited to TSMC 65nm and TSMC 130nm. In addition, all GDS files generated with this method are DRC-clean and LVS-clean. This work paves the way for MAGICAL to be used in design automation at various technology nodes.