PERFORMANCE EVALUATION OF FULL ADDER AND ITS IMPACT ON RIPPLE CARRY ADDER DESIGN

Gulivindala Suresh, Ch. Srinivasa Rao

Abstract: Full adder is an essential module in the design and development of all types of processors such as digital signal processors (DSP), microprocessors etc. Adders are the nucleus element of composite arithmetic operations like addition, multiplication, division, exponentiation etc. The various full adders available are conventional CMOS full adder, parallel prefix adders, hybrid full adders, and mirror full adders, adders using transmission gates and multiplexer logic. The main goal is to compare the existing full adder circuit’s performance and to identify a Low Power Full Adder and to analyze its impact on 8-bit, 16-bit, 32-bit ripple carry adder design. Mentor Graphics IC studio tool in 180 nm technology is used to design and implement the proposed full adders and ripple carry adders

Keywords: Delay; Full adder; Logic Impact; Low Power; Performance Analysis; Ripple carry adder;

DOI: https://doi.org/10.15623/ijret.2014.0316005