ADVANCED DIGITAL DESIGN OF CARRY SKIP ADDER WITH HYBRID METHOD FOR FIELD PROGRAMMABLE GATE ARRAY

Elsa Thomas, Nidiya Habeeb
International Journal of Technical Research and Applications   unpublished
A hybrid variable latency carry skip adder (CSKA) structure that has a higher speed yet lower energy consumption compared with the conventional one is presented in this paper. Hybrid variable latency extension of the proposed structure, lowers the power consumption without considerably impacting the speed, is presented. This extension utilizes a modified parallel structure for increasing the slack time, and hence, enabling further voltage reduction. The modified structure make use of
more » ... e use of Han-Carlson adder. The proposed structures are assessed by comparing their speed, power, and energy parameters with those of other adders. The results that are obtained on simulations reveal, that improvements are there in the delay and energy compared with those of the conventional CSKA. In addition, the power-delay product was the lowest among the structures considered in this paper. Simulations on the proposed hybrid variable latency CSKA reveal reduction in the power consumption compared with the latest works in this field while having a reasonably high speed. Keywords-Carry skip adder (CSKA), energy efficient, high performance, hybrid variable latency adders, voltage scaling.
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