A 6-b 1-GS/s 30-mW ADC in 90-nm CMOS technology

A 6-b 1-GS/s subranging ADC with THA is implemented in 90-nm CMOS technology. This circuit incorporates folded input for the fine ADC as well as offset calibration and digital correction techniques, achieving greater than 5.2 ENOB and 40-dB SFDR up to the Nyquist, and 1.1-GHz ERBW with power consumption of only 30 mW.