Successive Approximation Register Analog-to-Digital Converter (SAR ADC) for Biomedical Applications

Table 9

Performance summary of energy-efficient in DAC with MATLAB.

Reference	Average switching energy	Energy savings (%)	Number of required unit capacitors	Capacitor area reduction (%)	Reset energy	Dependency on the accuracy of	Max. common mode variation
[25]	1363.3	Ref	2048	Ref	—	No	No
[70]	0	100	266	87	—	No	No
[46]	26.7	98.4	512	75	—	Only LSB	1 LSB
[37]	21.3	98.4	512	75	—	Only LSB	0.5 LSB
[79]	21.3	98.7	512	75	—	From second bit
[43]	10.54	99.23	512	75	0	From second bit	—
[72]	170.4	87.5	256	87.5	—	No	No
[81]	63.56	95.34	512	75	—	Only LSB
[82]	106.2	92.2	1024	50	—	—
[48]	10.8	99.2	256	87.5	48.12	From third bit
[83]	26.4	98.1	512	75	—	From second bit	—
[80]^2018	7.94	99.4	512	75	—	From third bit
[54]	17.6	99.01	384	81.25	0	From second bit
[84]	9.38	99.31	512	75	74.58	Only LSB
[73]	170.4	87.5	256	87.5	—	No	No
[41]	5.3	99.61	1024	50	0	—
[57]	6.573	99.52	1616	21.09	24.1	No	No
[88]	48.03	96.48	256	87.5	—	—	—
[47]	31.75	97.67	256	87.5	63.875	From third bit
[30]	6.7472	99.51	132	93.55	0.554	—	No
[59]	27.4	98	563	72.5	0	—	—
[56]	8.6	99.37	288	86	0	From second bit	/
[40]	42.417	96.89	1024	50	—	No	No
[42]	26.54	98.05	512	75	0	From second bit
[60]	6.955	99.49	1024	50	—	From third bit
[28]	2.9	99.8	292	86	0	From second bit
[50]	9.6	99.3	268	87	0	From second bit
[49]	21.6	98.9		87.2	0	From second bit
[58]	63.5	95.34	256 + 2Cs	82.61	—	Only LSB
[55]	4.3491	99.68	163	92	0	From third bit
[39]	26.58	70	512	75	—	From second bit	1 LSB
[71]	52.7	92.3	1024	50	—	No	No
[89]	29.3	97.85	256	87.5	—	From second bit
[38]	21.21	98.4	256	87.5	127.75	From second bit	0.5 LSB
[85]	11.8502	99.13	162	92.1	0.1367	From third bit	231 LSB (231 VREF/512)
[44]	55.44	95.93	512	75	127.75	No	No