Design of an Energy-Efficient Approximate 4:2 Compressor by Using Multiplexer Approximate Adder

Design of an Energy-Efficient Approximate 4:2 Compressor by Using Multiplexer Approximate Adder

Authors- P.G Scholor Redrowthu Sujin Anil Kumar, Assistant Professor C Rama Krishna Gayatri, Assistant Professor A Swapna/span>

Abstract-An adder is the basic computational circuit in digital Very Large Scale Integration design. Approximate Adders have been proposed to improve the design metrics of an adder. A multiplexer makes it possible for several input signals to share one device or resource. In this paper 4:2 compressors are designed by using various approximate full adder is proposed for low power. The MAA architecture is build using the inverter-based multiplexer which gives high power efficiency than the other adders, for performance evaluation four types of approximate mirror adders have been referred. On analysis it is found that Multiplexer based approximate full adder is the most power efficient with a considerable propagation delay.

DOI: /10.61463/ijset.vol.12.issue5.282