{"title":"Dynamic calibration of feedback DAC non-linearity for a 4th order CT sigma delta for digital hearing aids","authors":"S. R. Naqvi, I. Deligoz, S. Kiaei, B. Bakkaloglu","doi":"10.1109/SOCC.2011.6085129","DOIUrl":null,"url":null,"abstract":"In this paper we present a calibration scheme for calibrating the 2<sup>nd</sup> order harmonic distortion of feedback DAC used in a 4<sup>th</sup> order CT-ΣΔ. This scheme was implemented in a 0.25um CMOS process with a supply voltage of 1.2V, the 4<sup>th</sup> order CT-ΣΔ was able to achieve 68dB measured SNR, while the 2<sup>nd</sup> order harmonic was reduced by about 20dB suppressing it to the thermal noise floor.","PeriodicalId":365422,"journal":{"name":"2011 IEEE International SOC Conference","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 IEEE International SOC Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SOCC.2011.6085129","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
In this paper we present a calibration scheme for calibrating the 2nd order harmonic distortion of feedback DAC used in a 4th order CT-ΣΔ. This scheme was implemented in a 0.25um CMOS process with a supply voltage of 1.2V, the 4th order CT-ΣΔ was able to achieve 68dB measured SNR, while the 2nd order harmonic was reduced by about 20dB suppressing it to the thermal noise floor.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
