Employed the proposed switching scheme, a 10-bit 1-kS/s SAR ADC is designed in 0.18-mu m CMOS technology with an active area of 0.025 mm(2). With a 1-V power supply for analog and 0.5-V for digital circuit, the ADC achieves an ENOB of 9.73 bits and a FoM of 4.1 fJ/conversion...