DocumentCode
1619251
Title
Two Class-D audio amplifiers with 89/90% efficiency and 0.02/0.03% THD+N consuming less than 1mW of quiescent power
Author
Rojas-González, Miguel A. ; Sánchez-Sinencio, Edgar
Author_Institution
Texas A&M Univ., College Station, TX
fYear
2009
Firstpage
450
Abstract
This work presents two different design methodologies to implement high- performance Class-D audio amplifiers with minimal power consumption. Both topologies are based on the same principle: a binary-modulation (two-level) amplifier (BMA) and a ternary-modulation (three-level) amplifier (TMA), using variable structure control.
Keywords
CMOS analogue integrated circuits; audio-frequency amplifiers; harmonic distortion; low-power electronics; variable structure systems; CMOS technology; THD+N; audio driver; audio modulator; binary-modulation amplifier; class-D audio amplifier; low-power requirement; sliding-mode controller; ternary-modulation amplifier; total harmonic distortion plus noise; variable structure control; Energy consumption; Hysteresis; Linearity; Power amplifiers; Power generation; Pulse width modulation; Signal generators; Sliding mode control; Switches; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009. IEEE International
Conference_Location
San Francisco, CA
Print_ISBN
978-1-4244-3458-9
Type
conf
DOI
10.1109/ISSCC.2009.4977502
Filename
4977502
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