Improved Switching Energy Reduction Approach in Low-Power SAR ADC for Bioelectronics

Table 1

Comparison with previous works for 10-bit SAR ADC.

Switching scheme	Area ()	Average energy ()	Accuracy requirement on subreferences
Conventional [1]	2048	1363.4	Not used
Cap splitting [1]	2048	852.3	Not used
Monotonic [2]	1024	255.5	Not used
-based [3]	1024	170.2	From MSB
Zhangming [4]	512	31.9	From MSB
Xingyuan [5]	512	−0.135	From the 3rd bit
Xingyuan [6]	256	31.4	The last 2 bits
Proposed	268	32.5	Not used