An approach for efficient design of digital amplifiers

Author

Vlassopoulos, N. ; Reisis, D. ; Lentaris, G. ; Tombras, G. ; Prosalentis, E. ; Ritas, N. ; Tsakalis, K.

Author_Institution

Electron. Lab., Nat. & Kapodistrian Univ. of Athens

fYear

2006

fDate

21-24 May 2006

Abstract

This paper presents a control-theoretic approach to the design of digital to analog converters and digital amplifiers leading to improved performance in audio and multimedia applications. The design involves oversampling and noise compression blocks as a pulse width modulation class-D amplifier, introduces an output-filter estimator block and applies a different modulation scheme. The theoretical model results in a family of digital circuits verified by software simulation and validated by a FPGA implementation with best performance 147 dB signal to noise ratio

Keywords

amplifiers; digital circuits; digital-analogue conversion; pulse width modulation; FPGA; class-D amplifier; digital amplifiers; digital circuits; digital to analog converters; output-filter estimator block; pulse width modulation; Application software; Circuit noise; Circuit simulation; Digital circuits; Digital-analog conversion; Pulse amplifiers; Pulse compression methods; Pulse width modulation; Software performance; Space vector pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693887

Filename

1693887