Incremental Delta Sigma Modulation with Dynamic Weighted Integration

This paper presents a technique to reduce the required number of cycles to reach a given quantization resolution of conversion performed by incremental ΔΣ ADCs. Thanks to a specifically designed dynamic weighting of the modulator's coefficients combined with a dedicated digital filter, the Over...

Full description

Saved in:
Bibliographic Details
Main Authors: Guicquero, William, Verdant, Arnaud, Morche, Dominique
Format: Conference Proceeding
Language:English
Subjects:
Dynamic range
Modulation
Multi-stage noise shaping
Quantization (signal)
Robustness
Topology
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a technique to reduce the required number of cycles to reach a given quantization resolution of conversion performed by incremental ΔΣ ADCs. Thanks to a specifically designed dynamic weighting of the modulator's coefficients combined with a dedicated digital filter, the OverSampling Ratio (i.e., OSR) can be reduced compared to conventional structures thanks to a more efficient quantization noise shaping. This Dynamic Weighted Integration (DWI) technique is first motivated in the context of a first order modulator supported with a mathematical proof. In the second part, the proposed technique is extended to the specific case of a complex fourth order modulator with four different examples of topology regarding the position of the dynamic weighting.
ISSN:1558-3899
DOI:10.1109/MWSCAS.2018.8623872