Title :
1 W 0.8 /spl mu/m BiCMOS adaptive Q-current controlled class-AB power amplifier for portable sound equipments
Author :
Jong-Tae Hwang ; Han-Seung Lee
Author_Institution :
Power Device Div., Fairchild Semicond., Puchon, South Korea
Abstract :
An AQC class-AB amplifier has been designed with low THD and quiescent power consumption. It uses the 0.8 /spl mu/m 10 V BiCMOS process, and occupies 1.8 /spl times/ 1.6 mm. It has <0.3 %, THD+N over the audio frequency range driving 1 W into 8 /spl Omega/. It consumes 2.6 mA at quiescent condition and has 65.1 % power efficiency.
Keywords :
BiCMOS analogue integrated circuits; adaptive control; audio-frequency amplifiers; harmonic distortion; power amplifiers; 0.8 micron; 1 W; 1.6 mm; 1.8 mm; 10 V; 2.6 mA; 65.1 percent; 8 ohm; AQC power amplifiers; BiCMOS adaptive Q-current-controlled class-AB power amplifiers; BiCMOS process; THD; THD+N; audio amplifiers; audio frequency range; portable sound equipment; power efficiency; quiescent current control; quiescent power consumption; total harmonic distortion; Adaptive control; BiCMOS integrated circuits; Distortion; Energy consumption; Filters; High power amplifiers; Power amplifiers; Programmable control; Rectifiers; Signal generators;
Conference_Titel :
Solid-State Circuits Conference, 2002. Digest of Technical Papers. ISSCC. 2002 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-7335-9
DOI :
10.1109/ISSCC.2002.993092
