An FPGA-based digital class-D amplifier using short word-length

Thakkar, D, Lethbridge, G, Targownik, T, Ling, A, Sadik, A, Beckett, P and Hussain, Z 2007, 'An FPGA-based digital class-D amplifier using short word-length', in R. Green (ed.) Proceedings of Australasian Telecommunication Networks and Applications Conference 2007 (ATNAC 2007), Christchurch, New Zealand, 2-5 December 2007, pp. 293-297.


Document type: Conference Paper
Collection: Conference Papers

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n2006007549.pdf Published version application/pdf 552.12KB
Title An FPGA-based digital class-D amplifier using short word-length
Author(s) Thakkar, D
Lethbridge, G
Targownik, T
Ling, A
Sadik, A
Beckett, P
Hussain, Z
Year 2007
Conference name Australasian Telecommunication Networks and Applications Conference (ATNAC-2007)
Conference location Christchurch, New Zealand
Conference dates 2-5 December 2007
Proceedings title Proceedings of Australasian Telecommunication Networks and Applications Conference 2007 (ATNAC 2007)
Editor(s) R. Green
Publisher IEEE
Place of publication Piscataway, USA
Start page 293
End page 297
Abstract A digital Class-D amplifier based on single-bit processing to be implemented on a field programmable gate array (FPGA) is presented. The main focus of this design is the reduction of noise, a drawback of Class-D amplifiers, by exploring the noise-shaping characteristics of sigma-delta modulation (SDM). The audio signal is retained in the digital single-bit domain until the final stage of the amplifier, thus avoiding quantization noise due to conversion. This paper focuses on the SDM and digital signal processing (DSP) components of the design to be implemented on the FPGA.
Subjects Circuits and Systems
Keyword(s) amplifiers
digital signal processing chips
field programmable gate arrays
interference suppression
sigma-delta modulation
DOI - identifier 10.1109/ATNAC.2007.4665278
Copyright notice © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ISBN 9781424415571
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