IceMOS: Cryo-CMOS Python-Based Calibration Tool

This paper proposes a Python-based tool, called IceMOS, to assists in the calibration of a 65nm Process Design Kit (PDK) for Cryogenic (Cryo) CMOS applications at 4 Kelvin (K). IceMOS automates several recursive tasks such as parameter extraction and simulation-file generation, which are usually done manually in commercial solutions. The 4K-calibrated PDK, using IceMOS, produces simulation results that show an excellent matching with laboratory data obtained from a test chip under 4K conditions, where the Mean Root Square error is less than 0.21µA². Additionally, IceMOs is several orders of magnitude faster than commercial solutions, making it ideal for designers willing to explore PDK calibration at 4K.