Activity 3

Activity: Characterize an inverter in SkyWater 130nm

• Installing the SkyWater 130nm Design Kit
  • The SKY130 design kit documentation (still a work in progress)
  • Introduction to the SkyWater PDK by Tim Edwards (efabless)
  • The MAGIC user guide
• Installing XSCHEM
  • The XSCHEM online manual
• An alternative and step-by-step installation of NGSPICE, MAGIC, XSCHEM, and the SkyWater 130nm Design Kit onto a dedicated Linux (Ubuntu) virtual machine using virtualization software such as VirtualBox or QEMU.
  • Installing Open-Source EDA Tools on a Virtual Machine
  • [Using Python with NGSPICE]
• Exercise:
  • Determine the transistor ratio, β, that will give equal high-to-low and low-to-high delays
  • Determine the FO4 delay of the minimum sized inverter
  • Plot the inverter VTC