Area Efficient Carry Select Adder (AE-CSLA) using Cadence Tools
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2014 by IJETT Journal|
|Year of Publication : 2014|
|Authors : Gagandeep Singh , Chakshu Goel
Gagandeep Singh , Chakshu Goel. "Area Efficient Carry Select Adder (AE-CSLA) using Cadence Tools", International Journal of Engineering Trends and Technology (IJETT), V10(10),492-495 April 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
To perform fast addition operation, CSLA is one of the fastest adders used in many data-processing processors. Analyzing the structure of Regular CSLA (R-CSLA) and Modified CSLA (M-CSLA), there is a scope to reduce the area further. This work uses a simple gate level modification and a modified XOR gate is proposed to be used in the circuit. Based on this modification, 16-bit Area Efficient CSLA (AE-CSLA) is designed which provides 32% reduction in area when compared with R-CSLA and 12.5% reduction in area when compared with M-CSLA. This work is implemented in CADENCE VIRTUOSO using 180nm CMOS process technology.
 O.J. Badrij, “Carry-select Adder” IRE Transaction Electronics Computers, pp 340-344, 1962.
 T.Y. Chang and M.J. Hsiao, “Carry select adder using single ripple-carry adder,”Electronics Letters,vol.34,no.22,pp.2101–2103,Oct.1998.
 Y. Kim and L.S. Kim,“64-bit carry-select adder with reduced area” Electron. Lett., vol.37, no.10, pp.614–615, May2001.
 B. Ramkumar and Harish M Kittur,” Low-Power and Area-Efficient Carry Select Adder”, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, VOL. 20, NO. 2, February 2012.
 B. Ramkumar, H. M. Kittur, and P. M. Kannan, “ASIC implementation of modified faster carry save adder,” Eur. J. Sci. Res., vol. 42, no. 1, pp. 53–58, 2010.
 Y. He, C.H. Chang and J. Gu,”an area efficient 64-bit sqrt carry-select adder for low power applications,” in Proc. IEEE. Int. Symp. Circuits Syst., 2005, vol.4pp. 4082-4085.
Binary to Excess-1 converter (BEC), Carry Select Adder(CSLA), Multiplexer(MUX), Ripple Carry Adder(RCA), Exclusive OR(XOR).