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.
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页码：444 / 447
页数：4
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