Title :
Mixed-signal noise-decoupling via simultaneous power distribution design and cell customization in RAIL
Author :
Stanisic, Balsha R. ; Rutenbar, Rob A. ; Carley, L. Richard
Author_Institution :
Dept. VLSI Dev. IV, IBM Corp., Rochester, MN, USA
Abstract :
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
Keywords :
circuit layout CAD; integrated circuit layout; integrated circuit noise; mixed analogue-digital integrated circuits; ASIC design; RAIL; cell customization; chip-level noise problems; mixed-signal noise-decoupling; noise effects; power I/O cell assignments; power distribution design; power distribution synthesis tool; Analog circuits; Circuit noise; Circuit synthesis; Circuit topology; Noise reduction; Power distribution; Power grids; Power supplies; Rails; Working environment noise;
Conference_Titel :
Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1886-2
DOI :
10.1109/CICC.1994.379666
