Dynamic Pass-Transistor Dot Operators for Efficient Parallel-Prefix Adders
Paper i proceeding, 2004

We employ a dynamic pass-transistor technique to drastically reduce the area requirement and power dissipation of the dot-operator cell in parallel-prefix adders. The technique is demonstrated in both 0.35 μm and 0.13 μm process technologies on a 64-bit Kogge-Stone carry tree. In a comparison with a corresponding domino implementation it is shown that the transistor count and the power dissipation can be reduced with as much as 25% and 50%, respectively. On top of the area and power reduction, the delay can also be significantly reduced by using NMOS precharge transistors, but this requires a clock signal with a higher voltage.


Henrik Eriksson

Chalmers, Institutionen för datorteknik, Integrerade elektroniksystem

Per Larsson-Edefors

Chalmers, Institutionen för datorteknik, Integrerade elektroniksystem

International Symposium on Circuits and Systems (ISCAS), Vancouver, CANADA. MAY 23-26, 2004

0271-4310 (ISSN)

Vol. 2 461-464


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