26.1 A 1mW 71.5dB SNDR 50MS/S 13b fully differential ring-amplifier-based SAR-assisted pipeline ADC

The SAR-assisted pipeline ADC is an energy-efficient architecture for high resolution [1]. Consisting of two low-resolution charge-redistribution SARADCs coupled by a residue amplifier, a SAR-assisted pipeline ADC relaxes the noise requirements of the second stage and enhances the overall ADC speed while maintaining excellent power efficiency [1-4]. However… CONTINUE READING