Abstract
An equivalent bit conversion algorithm (EBCA) is proposed to eliminate the need for final carry propagation in the redundant binary (RB) to normal binary (NB) conversion step for RB multiplication. The multiplication process helps with the carry-free conversion step by eliminating certain combinations of RB product. When the EBCA is applied, conventional power-consuming carry-propagating adders are replaced by simple, minimum-sized carry-free converters, and the entire multiplication process can be made free of carry propagation from input to output. The method employed in this work reduces 40% of the total power and 30% of the total multiplication time in the final adder stage of traditional multipliers. The prototype fabricated in 0.35-/spl mu/m CMOS demonstrates that the 54 b/spl times/54 b multiplier consumes only 53.4 mW at 3.3 V for 74-MHz operation.
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