DocumentCode
2569079
Title
A Digital Input Controller for Audio Class-D Amplifiers with 100W 0.004% THD+N and 113dB DR
Author
Ido, T. ; Ishizuka, Shuhei ; Risbo, L. ; Aoyagi, F. ; Hamasaki, Taisuke
Author_Institution
Texas Instruments, Kanagawa
fYear
2006
fDate
6-9 Feb. 2006
Firstpage
1366
Lastpage
1375
Abstract
A digital input controller for audio class-D amplifiers is presented. The controller utilizes specially configured integrated DAC and power stage feedback loop to suppress distortion components coming from power-stage switching with digital input capability. The class-D amplifier system with the controller and an existing power stage achieves 113dB DR, 0.0018% THD+N with 10W output power, and 0.004% THD+N with 100W output power into 4Omega load
Keywords
audio-frequency amplifiers; digital control; feedback; harmonic distortion; 100 W; 4 ohm; audio class-D amplifiers; digital input controller; distortion suppression; dynamic range; harmonic distortion; power stage feedback loop; power-stage switching; Digital control; Digital filters; Feedback loop; Frequency; Low pass filters; Power amplifiers; Power generation; Pulse amplifiers; Pulse width modulation; Topology;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International
Conference_Location
San Francisco, CA
ISSN
0193-6530
Print_ISBN
1-4244-0079-1
Type
conf
DOI
10.1109/ISSCC.2006.1696185
Filename
1696185
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