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
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;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-61284-303-2
DOI :
10.1109/ISSCC.2011.5746301
