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Erschienen in:
2011 | OriginalPaper | Buchkapitel
An On-Chip All-Digital PV-Monitoring Architecture for Digital IPs
verfasst von : Hossein Karimiyan, Andrea Calimera, Alberto Macii, Enrico Macii, Massimo Poncino
Erschienen in: Integrated Circuit and System Design. Power and Timing Modeling, Optimization, and Simulation
Verlag: Springer Berlin Heidelberg
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This paper presents an on-chip all-digital sensor architecture to capture process variation information. The proposed solution is based on the concept of
variation amplification
and uses the propagation delay measurement in a chain composed of series connected pass-transistors. The proposed sensor circuit is able to capture the local variation of nMOS and pMOS transistor individually. A sensor block is proposed, which contains N-type and P-type sensor circuit along with scan, control, and measurement circuitry. An array of sensor blocks with scan chain connection gathers process variation information all across the die. Detailed SPICE level simulations conducted for an industrial 45nm CMOS technology indicates its feasibility in sensing, and on-chip all-digital measurement of process variation effect.