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
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;
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
DOI :
10.1109/ISSCC.2009.4977502
