Analysis of Diffrent Fast Adders Circuits with Cadence Simulation Technology

Adders are basic and most required devices in many application like filter designing, division and the circuits are made by many adders therefore adders size, power dissipation, delay of operation must be considered to increase speed of operation of chip with less power supply on device. From the basic adders we have explain RCA, CSA, CSkA and Hybrid adder on 180nm and 45nm technology of cadence adder for power dissipation, and sizing of be done on this technology. In this paper we have mainly compare propagation delay in adders, power dissipation, PDP of 4 bit adder. And result is shown on the basis of comparison.