A Reliable Leakage Reduction Technique for Approximate Full Adder with Reduced Ground Bounce Noise

Table 1

Comparison of leakage power dissipation (pW) between existing and modified FA at 1.1v, 27°C temp.

Data	Conv_adder	MA1	MA2	MA3	MA4	Imprecise_adder_1	Imprecise_adder_2	Hybrid_FA	Inexact_adder_2017	MAA1	MAA2	MAA3	MAA4
000	119.7	81	70.7	69	63	60.0	111	169.3	55.20	62.4	46.8	40.9	43.3
001	140.4	107	69.6	67	61	61.0	126	161.4	49.70	59.0	44.0	36.6	34.5
010	150.0	77	73.2	70	73	66.2	143	161.4	64.20	41.4	39.2	27.3	40.6
011	211.0	93	89.4	87	89	68.5	150	167.6	903.2	37.6	38.1	28.0	33.3
100	192.8	83	82.0	88	91	57.4	128	164.2	2426.2	53.7	38.7	39.2	44.0
101	184.0	98	83.7	102	71	68.5	157	165.6	49.78	49.5	33.5	40.1	32.8
110	191.4	96	87.8	87	101	65.8	176	2539	64.27	36.9	30.2	28.0	41.0
111	248.5	118	90.4	104	105	69.4	205	1560	72.93	36.3	26.6	28.5	34.0
Avg.	179.7	94	80.8	84	82	65	149.5	636	461	47.1	37.1	33.6	38