Noise-Shaping SAR ADCs: From Discrete Time to Continuous Time


Noise-Shaping (NS) SAR ADCs become popular recently thanks to their low-power and high-resolution features. This presentation first summarizes and benchmarks different discrete-time (DT) NS-SAR implementations in literature. An open-loop duty-cycled residue amplifier is selected as a power-efficient solution to realize high residue gain. Then, a digital-predicted mismatch error shaping technique