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Mixed-signal noise-decoupling via simultaneous power distribution design and cell customization in RAIL

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3 Author(s)
Stanisic, B.R. ; Dept. VLSI Dev. IV, IBM Corp., Rochester, MN, USA ; Rutenbar, R.A. ; Carley, L.R.

An important and largely unexplored aspect of power distribution synthesis is cell customization. Through cell customization, power I/O cell assignments and local substrate and power supply decoupling may be tailored to reduce deleterious noise effects on analog circuits in mixed-signal environments. In this paper, we describe techniques for simultaneous power grid design (topology and sizing) and cell configuration/customization which allow designers to handle more difficult chip-level noise problems. We have incorporated this new approach in the power distribution synthesis tool RAIL and demonstrate its effectiveness on an industrial mixed-signal example

Published in:

Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994

Date of Conference:

1-4 May 1994