Comparative Analysis of Parallel Prefix Adders

The speed, size, and power consumption of adders are always trade-offs that affect the system’s overall performance. One of the performance issues is carry propagation, which restricts the speed of the addition process. When it comes to latency and coverage area, Parallel Prefix Adders (PPAs) are the greatest adders on the market right now. The implementation and comparison of four widely used parallel adders—the Brent-Kung Adder, the Kogge-Stone Adder, the J Sklansky Adder, and the Ladner-Fischer Adder—are covered in this paper, The adders obtained delays are 5.910 ns, 4.580 ns, 4.148 ns, and 4.520 ns, respectively, and their corresponding power outputs are 15.196uW, 20.532uW, 17.864uW, and 11.240uW. In this research, the adders power consumption and delays have been compared. It’s discovered that no single adder can provide benefits for Power and Delay performance characteristics. Different adders are preferred for specific aspects; therefore, they are chosen based on design requirements.