DocumentCode
2894482
Title
Filterless integrated class-D audio amplifier achieving 0.0012% THD+N and 96dB PSRR when supplying 1.2W
Author
Teplechuk, Mykhaylo ; Gribben, Tony ; Amadi, Christophe
Author_Institution
Dialog Semicond., Edinburgh, UK
fYear
2011
fDate
20-24 Feb. 2011
Firstpage
240
Lastpage
242
Abstract
High power efficiency, small size and reduced heat dissipation are highly desirable in battery-powered mobile systems and switched-mode class-D amplifiers can readily satisfy these requirements. However, full adoption of class-D technology in mobile systems has been somewhat limited due to concerns such as signal distortion and noise, poor power supply noise rejection, electromagnetic interference (EMI) and the requirement for external LC filters.
Keywords
audio-frequency amplifiers; harmonic distortion; LC filters; THD; battery-powered mobile systems; electromagnetic interference; filterless integrated class-D audio amplifier; power 1.2 W; power supply noise rejection; signal distortion; switched-mode class-D amplifiers; Capacitors; Frequency modulation; Power amplifiers; Power generation; Power harmonic filters; Pulse width modulation;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International
Conference_Location
San Francisco, CA
ISSN
0193-6530
Print_ISBN
978-1-61284-303-2
Type
conf
DOI
10.1109/ISSCC.2011.5746301
Filename
5746301
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