A 15-ns 32×32-b CMOS multiplier with an improved parallelstructure |
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Authors: | Nagamatsu M. Tanaka S. Mori J. Hirano K. Noguchi T. Hatanaka K. |
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Affiliation: | Toshiba Corp., Kawasaki; |
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Abstract: | A high-speed 32×32-b parallel multiplier with an improved parallel structure using 0.8-μm CMOS triple-level-metal technology is discussed. A unit adder, a 4-2 compressor, enhances the parallelism of the multiplier array. A 25% reduction in the propagation delay time is achieved by using the compressor. The multiplier contains 27704 transistors with a 2.68-×2.71-mm2 die area. The multiplication time is 15 ns at 5 V with a power dissipation of 277 mW at 10-MHz operation. The triple-level-metal interconnection technology reduces the multiplier layout area. Compared with double-level-metal technology, a 27% chip size reduction is achieved |
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