Automation of IC layout with analog constraints
Malavasi, E.; Charbon, E.; Felt, E.; Sangiovanni-Vincentelli, A.
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
Volume 15, Issue 8, Aug 1996 Page(s):923 - 942
Digital Object Identifier 10.1109/43.511572
Summary:A methodology for the automatic synthesis of full-custom IC layout
with analog constraints is presented. The methodology guarantees that
all performance constraints are met when feasible, or otherwise,
infeasibility is detected as soon as possible, thus providing a robust
and efficient design environment. In the proposed approach, performance
specifications are translated into lower-level bounds on parasitics or
geometric parameters, using sensitivity analysis. Bounds can be used by
a set of specialized layout tools performing stack generation,
placement, routing, and compaction. For each tool, a detailed
description is provided of its functionality, of the way constraints are
mapped and enforced, and of its impact on the design flow. Examples
drawn from industrial applications are reported to illustrate the
effectiveness of the approach
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