Design and Implementation of ALU Using Graphene Nanoribbon Field-Effect Transistor and Fin Field-Effect Transistor

Table 7

Performance comparison of DCHA with existing 4-bit adders.

Method	HFA [11]	IMCA [12]	CTA [13]	RCA [18]	DCHA
APC (nw)	18.47604	14.92352	4.026748	3.864	2.192
SRD (ns)	75.10486	74.79715	73.56105	27.907	15.848
SFD (ns)	150.6788	150.4149	149.2157	35.268	20.024
CORD (ps)	95.95508	95.25369	19.09223	3.486	1.9776
COFD (ps)	89.41629	81.97247	18.23998	27.897	15.824
PD (ns)	90.41935	76.55743	75.76552	3.457	1.976
TC (nA)	60.79343	53.40014	51.62253	4.555	2.536
SPC (nw)	44.33936	37.48682	23.83228	3.6015	2.008
TEC (nJ)	56.83848	45.30395	9.060036	0.134	0.072
SNM	52.10218	51.73716	34.44368	10.35	5.8722