Session 28 overview: Hybrid ADCs

Abstract

Analog-to-digital converters (ADCs) continue to evolve from classical architectures into hybrid converters that combine the strengths of various ADC types. This session demonstrates multiple hybrid ADCs ranging from MHz to GHz bandwidths, employing combinations of SAR, pipeline and oversampling architectures. Pipelined-SAR ADCs utilizing PVT-stabilized dynamic amplifiers, separate comparators per decision and digital amplifiers are disclosed. Noise-shaping phase-domain excess-loop-delay compensation as well as a double noise-shaping quantizer are employed in the ADCs to improve the conversion efficiency.