Clock jitter in class-D audio power amplifiers

被引：10

作者：

Berkhout, Marco ^{[1
]}

机构：

[1] NXP Semicond, Nijmegen, Netherlands

来源：

ESSCIRC 2007: PROCEEDINGS OF THE 33RD EUROPEAN SOLID-STATE CIRCUITS CONFERENCE | 2007年

关键词：

D O I：

10.1109/ESSCIRC.2007.4430338

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：

Many class-D audio amplifiers use a reference clock to fix the PWM carrier frequency. The jitter of the reference clock can cause significant voltage noise at the amplifier output. In this paper a simple model is presented that allows accurate prediction of the noise contribution from an integrated regenerative sawtooth oscillator to the output noise of a class-D audio amplifier. The implementation of an oscillator in a class-D amplifier is presented and the model is verified with measurements.

引用

页码：444 / 447

页数：4