A High-Performance Mash Fourth-Order Sigma-Delta Modulator

Wen Yan Liu; Bin Zhang; Long Chen; Chao Gao; Xiao Wei Liu

doi:10.4028/www.scientific.net/KEM.503.207

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 503A High-Performance Mash Fourth-Order Sigma-Delta...

A High-Performance Mash Fourth-Order Sigma-Delta Modulator

Abstract:

This paper reports on a system level design and analysis of a mash fourth-order sigma-delta (ΣΔ) modulator. Compared with a high-order single-loop ΣΔ modulator (ΣΔM), there’s no need to consider about the system stability of a mash ΣΔM, which has the advantages of better signal to quantization noise ratio (SQNR). System level simulation results indicate that the SQNR is 122.0 dB, and the effective number of bits (ENOB) is 19.97 bits when the over sampling ratio (OSR) is 128.

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Periodical:

Key Engineering Materials (Volume 503)

Pages:

207-210

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.503.207

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Online since:

February 2012

Authors:

Wen Yan Liu, Bin Zhang, Long Chen, Chao Gao, Xiao Wei Liu

Keywords:

Mash, Modulator, Quantization Noise, Sigma-Delta, System

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References

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