A three level Trellis noise shaping converter for class D amplifiers

Ludovico Ausiello, Riccardo Rovatti, Gianluca Setti

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Class D amplifiers can represent signals with three different output levels, +V cc,0, -V cc, with no distortion. Exploiting this in order to achieve a better performance with no switching frequency increase, an extension to the classic Pulse Width Modulation two level A/D conversion is proposed. Coding is achieved by extending output waveforms of a Trellis based Sigma Delta Modulation to three levels. Simulation results have shown that, using the same symbol rate, a three level pattern achieved from 3.7 to 8.2 dB of SINAD improvement and a power consumption up to 5 times smaller.
Original languageEnglish (US)
Title of host publicationAudio Engineering Society - 120th Convention Spring Preprints 2006
Number of pages4
StatePublished - Dec 1 2006
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-15


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