paper"Clock jitter in class-D audio power amplifiers&qu

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Clock jitter in class-D audio power amplifiers

4430338 abstract

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Berkhout, M.
NXP Semicond., Nijmegen

This paper appears in: Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Publication Date: 11-13 Sept. 2007
On page(s): 444 - 447
Location: Munich
ISSN: 1930-8833
Print ISBN: 978-1-4244-1125-2
INSPEC Accession Number: 9836008
Digital Object Identifier: 10.1109/ESSCIRC.2007.4430338
Current Version Published: 14 一月 2008

Abstract
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.