Digital input audio power amplifiers in 0.6-μm BCD technology: two examples

Author

Botti, E. ; Grosso, A. ; Meroni, C. ; Stefani, F.

Author_Institution

STMicroelectronics, Cornaredo, Italy

fYear

2004

fDate

24-27 May 2004

Firstpage

93

Lastpage

96

Abstract

In consumer electronics, the digital processing of the audio signal is becoming preferred with respect to the "old" analog processing. The last block still with analog input and full analog processing is the audio power amplifier. Thanks to the high-density BCD technology it is now possible to implement a low-cost single-chip audio power amplifier with digital input. In this paper two examples are presented, exploring respectively the switching technique (PWM) and the linear class-AB output stage.

Keywords

BIMOS integrated circuits; audio signal processing; audio-frequency amplifiers; consumer electronics; digital signal processing chips; power amplifiers; power integrated circuits; pulse width modulation; 0.6 micron; BCD technology; DSP; PWM; audio power amplifiers; bipolar CMOS DMOS; consumer electronics; digital input; digital signal processor; linear class AB output stage; pulse width modulation; Audio amplifiers; BIMOS integrated circuits; Consumer electronics; Digital signal processors; Power amplifiers; Power integrated circuits; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Semiconductor Devices and ICs, 2004. Proceedings. ISPSD '04. The 16th International Symposium on

Print_ISBN

4-88686-060-5

Type

conf

DOI

10.1109/ISPSD.2004.1332867

Filename

1332867