Discrete-Time MASH Delta-Sigma Modulator with Second-Order Digital Noise Coupling for Wideband High-Resolution Applications

Xinyu Qin,Jingying Zhang,Liang Qi,Sai-Weng Sin,Rui P. Martins,Guoxing Wang

2021 IEEE International Symposium on Circuits and Systems (ISCAS)（2021）

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摘要

This paper presents a discrete-time multi-stage noise shaping (MASH) delta-sigma modulator (DSM) with second-order digital noise coupling for wideband high-resolution applications. By directly injecting the output of the second loop into the quantizer input of the first loop while choosing an appropriate signal transfer function of the second loop, a second-order digital noise coupling can be easi...

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关键词

Multi-stage noise shaping,Couplings,Quantization (signal),Simulation,Modulation,Transfer functions,Wideband

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