TY - GEN
T1 - Process Variation Sensing and Compensation Employing a Ring Oscillator-Based Architecture in SkyWater 130nm Technology
AU - López, Emilia Casares
AU - Montahuano, José
AU - Astudillo, Esteban
AU - Holguin, Eduardo
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper presents a fully digital process variation compensator designed and validated using the open-source SkyWater 130nm PDK. The architecture integrates a current-starved ring oscillator, a frequency-to-digital converter (FDC), and a digital comparator to detect and classify standard process corners in real time. A digitally controlled ramp generator serves as a test to validate the compensation mechanism under extracted post-layout conditions. Simulations across SS, TT, FF, SF, and FS corners demonstrate reliable corner classification and successful compensation of analog mismatch, with all corrected outputs converging to a reference response. Operation is validated within a temperature window of 10°C-40°C to ensure robust classification without frequency band overlap. The results confirm the suitability of the proposed architecture for adaptive, variation-tolerant ICs fabricated through open-source PDKs and Multi Project Wafer (MPW) flows.
AB - This paper presents a fully digital process variation compensator designed and validated using the open-source SkyWater 130nm PDK. The architecture integrates a current-starved ring oscillator, a frequency-to-digital converter (FDC), and a digital comparator to detect and classify standard process corners in real time. A digitally controlled ramp generator serves as a test to validate the compensation mechanism under extracted post-layout conditions. Simulations across SS, TT, FF, SF, and FS corners demonstrate reliable corner classification and successful compensation of analog mismatch, with all corrected outputs converging to a reference response. Operation is validated within a temperature window of 10°C-40°C to ensure robust classification without frequency band overlap. The results confirm the suitability of the proposed architecture for adaptive, variation-tolerant ICs fabricated through open-source PDKs and Multi Project Wafer (MPW) flows.
KW - Binary Comparator
KW - Frequency-to-Digital Converter
KW - Process Variation Compensator
KW - Ramp Generator
KW - Ring Oscillator
UR - https://www.scopus.com/pages/publications/105023836184
U2 - 10.1109/SBCCI66862.2025.11218682
DO - 10.1109/SBCCI66862.2025.11218682
M3 - Contribución a la conferencia
AN - SCOPUS:105023836184
T3 - Proceedings - 2025 38th SBC/SBMicro/IEEE Symposium on Integrated Circuits and Systems Design, SBCCI 2025
BT - Proceedings - 2025 38th SBC/SBMicro/IEEE Symposium on Integrated Circuits and Systems Design, SBCCI 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 38th SBC/SBMicro/IEEE Symposium on Integrated Circuits and Systems Design, SBCCI 2025
Y2 - 25 August 2025 through 1 September 2025
ER -