{"title":"A robust continuous time loop filter PWM class D amplifier with high linearity and good immunity to process variations","authors":"Hsin-Hong Hou, Chung-Wei Lin, Wentao Chen","doi":"10.1109/ASSCC.2009.5357224","DOIUrl":null,"url":null,"abstract":"This paper describes a robust PWM class D amplifier with high linearity and good immunity to process variations. By using the proposed adaptive triangular wave generator (ATG), 0.0042% THD+N and 99.2dB dynamic range is achieved in this design. The standard deviation of THD+N ratio over 22 samples can be smaller by 4 times compared to the results without the adaptive triangular wave generator. This chip integrates power MOS stages and 2 channel design. The supply voltage is from 3V to 5.5V and the die area is 2.45mm × 2.9mm.","PeriodicalId":263023,"journal":{"name":"2009 IEEE Asian Solid-State Circuits Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 IEEE Asian Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASSCC.2009.5357224","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper describes a robust PWM class D amplifier with high linearity and good immunity to process variations. By using the proposed adaptive triangular wave generator (ATG), 0.0042% THD+N and 99.2dB dynamic range is achieved in this design. The standard deviation of THD+N ratio over 22 samples can be smaller by 4 times compared to the results without the adaptive triangular wave generator. This chip integrates power MOS stages and 2 channel design. The supply voltage is from 3V to 5.5V and the die area is 2.45mm × 2.9mm.
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