Gongwei Wang's updates

My name is Gongwei and I will be working on the EDA device modeling this semester

Weekly Update #0

Created GitBook page.

Weekly Update #1

1. What was accomplished:

   1. Did preliminary research into Skywater SKY130 PDK, OpenLane, SPICE modeling software.

   2. Collected and read documentation on Open-source tools available for EDA and PDKs

      1. SKY130: https://skywater-pdk.readthedocs.io/en/main/rules/device-details.html

      2. SPICE parameter list: https://www.seas.upenn.edu/~jan/spice/spice.MOSparamlist.html

      3. MOSFET modeling: https://www.ece.mcgill.ca/~grober4/SPICE/SPICE_Decks/1st_Edition/chapter5/Chapter%205%20MOSFETs%20web%20version.html

2. Roadblocks:

   1. No roadblocks at the moment.

3. Plans for the week:

   1. Extracting various preliminary MOSFET parameters for SPICE simulation (such as g_m, lambda, Vth) from some I-V, C-V graphs plotted in the previous semester from Icey.

Weekly Update #2

1. What was accomplished:

   1. Communicated with Wentao for his NMOS and SRAM I-V data from the previous semester.

   2. Plotted and analyzed preliminary MOSFET parameters for Vth.

      1. docs.google.com/spreadsheets/d/1C_Odhz8_j3Gs2BDzav9Uem-xi8sEem3tuQcyWqPRRQA/edit?usp=sharing

   3. Confirmed that we need to collect more data due to the limitations of the existing I-V data points.

   4. Wrote up a plan of equations and different methods of extracting Vth, and lambda.

      1. https://docs.google.com/document/d/1iD91FeDpwcOUBl5mRCegQmCtFu4HAtAGWHakf_YnocE/edit?usp=sharing

2. Roadblocks:

   1. No roadblocks at the moment.

3. Plans for the week:

   1. Collaborate with Ying to: classify accuracy levels for device parameter extraction and attempt extraction on existing chip 613

   2. Collect more data on Chip 613, most likely using the probe station under a larger range of Vds and Vgs

   3. Continue writeup on the parameter extraction doc of equations and different methods of extracting gm, lambda (Vth is ok).