An Overview of Noise-Shaping SAR ADC: From Fundamentals to the Frontier
Lu Jie, Xiyuan Tang, Jiaxin Liu, Linxiao Shen, Shaolan Li, Nan Sun, Michael P. Flynn
Abstract
The Noise-Shaping (NS) SAR is an attractive new ADC architecture that emerged in the last decade. It combines the advantages of the SAR and the DSM architectures. NS SAR shows excellent potential for high efficiency and low cost, and is highly suited to process scaling. This paper gives an overview of the history of NS-SAR, reviews the fundamentals challenges, and summarizes the latest developments, including advanced loop filtering techniques, DAC mismatch mitigation, kT/C mitigation, and bandwidth boosting. A comprehensive comparison of the state-of-the-art NS-SAR ADCs is provided, and conclusions are derived.
Topics & Concepts
Computer scienceBoosting (machine learning)Bandwidth (computing)Noise shapingSuccessive approximation ADCElectronic engineeringSynthetic aperture radarComputer architectureTelecommunicationsArtificial intelligenceEngineeringElectrical engineeringCapacitorVoltageAnalog and Mixed-Signal Circuit DesignLow-power high-performance VLSI designCCD and CMOS Imaging Sensors