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Indirect phase noise sensing for self-healing voltage controlled oscillators

TitleIndirect phase noise sensing for self-healing voltage controlled oscillators
Publication TypeConference Paper
Year of Publication2011
AuthorsYaldiz, S., V. Calayir, X. Li, L. Pileggi, A. Natarajan, M. A. Ferriss, and J. Tierno
Conference NameIEEE Custom Integrated Circuits Conference (CICC)
Pagination1 - 4
Date Published09/2011
Conference LocationSan Jose, CA
ISBN Number978-1-4577-0222-8

The push for higher performance analog/RF circuits in scaled CMOS necessitates self-healing via post-manufacturing tuning. A major challenge with self-healing systems is the efficient design of on-chip sensors that capture the performance of interest. This is particularly difficult for metrics such as phase noise that are not easily measured on-chip. We propose an indirect sensing method that exploits the correlations between the performance metrics of interest and those that can be measured using easy-to-integrate sensors. We demonstrate indirect phase noise sensing for a 25GHz self-healing voltage controlled oscillator (VCO) design in 32nm CMOS SOI that approaches the best parametric yield achievable based on simulated results.