Comments on Efficient dithering in Digital Delta-Sigma Modulator

被引：0

作者：

Mo, Hongjia ^{[1
]}

Kennedy, Michael Peter

机构：

[1] Univ Coll Cork, Sch Engn Elect & Elect Engn, Cork, Ireland

来源：

2014 21ST IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS (ICECS) | 2014年

关键词：

FRACTIONAL-N PLL;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The output spectra of digital delta sigma modulators (DDSMs) are characterized by unwanted spurious periodic tones (spurs). Additive pseudorandom dither is used to whiten the quantization noise of the DDSM in order to minimize these spurs. Unfortunately, pseudorandom dither signals are themselves periodic and may cause other spurs to appear. This paper describes a DDSM architecture with multiple periodic dither inputs and explains the limits of its performance.

引用

页码：88 / 91

页数：4

共 14 条

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