An advanced monolithic digitalized random carrier frequency spread-spectrum clock generator for EMI suppression

被引：1

作者：

郭海燕 ^{[1
,2
]}

陈早 ^{[1
]}

张波 ^{[1
]}

李肇基 ^{[1
]}

机构：

[1] State Key Laboratory of Electronic Thin Films and Integrated devices University of Electronic Science and Technology of China

[2] Information Engineering School,Southwest University of Science and Technology

来源：

半导体学报 | 2010年 / 31卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ransom carrier frequency modulation spread-spectrum clock generator; class D amplifier; electromagnetic interference;

D O I：

暂无

中图分类号：

TN432 [场效应型];

学科分类号：

摘要：

A novel monolithic digitalized random carrier frequency modulation spread-spectrum clock generator （RCF-SSCG） is proposed.In this design,the output frequency of the proposed RCF-SSCG changes with the intensity of the capacitive charge and discharge current.Its analytical model is induced and the effect of the modulation parameters on the spread spectrum is numerically simulated and discussed.Compared with other works,this design has the advantages of small size,low power consumption and good robustness.The circuit has been fabricated in a 0.5μm CMOS process and applied to a class D amplifier in which the proposed RCF-SSCG occupies an area of 0.112 mm;and consumes 9 mW.The experimental results confirm the theoretical analyses.

引用

页码：128 / 132

页数：5

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