International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 58 - Number 1 |
Year of Publication: 2012 |
Authors: S. V. Padmajarani, M. Muralidhar |
10.5120/9246-3410 |
S. V. Padmajarani, M. Muralidhar . Design and implementation of a Hybrid High Speed Area Efficient Parallel Prefix Adder in an FPGA. International Journal of Computer Applications. 58, 1 ( November 2012), 17-21. DOI=10.5120/9246-3410
Parallel prefix adder is the most flexible and widely used for binary addition. Parallel Prefix adders are best suited for VLSI implementation. A number of parallel prefix adder structures have been proposed over the past years intended to optimize area, fan-out, logic depth and inter connect count. This paper presents a hybrid high speed and area efficient adder architecture, based on parallel prefix computation by using four operators namely black, gray, O3-black and O3-gray operators. These operators are designed using multiplexers. The proposed hybrid architecture is implemented with 16-bit width operands on Xilinx Spartan 3E FPGA. The experimental results indicate that the proposed architecture is much faster and area efficient.