An 8b 600MS/s 200mW CMOS folding A/D converter using an amplifier preset technique

An 8b CMOS folding ADC with resistive averaging and interpolation exhibits 7.5 ENOB and a maximum sample frequency of 600MS/s while dissipating only 200mW. The ADC utilizes preset switches at the outputs of the pre-amplifiers. Chip area is 0.2mm/sup 2/, and supply voltage is 3.3/1.8V in 0.35/0.18/spl mu/m CMOS.