{"title":"A 16bit 1MS/s High-Bit Sampling SAR ADC with Improved Binary-Weighted Capacitive Array","authors":"Bowei An, Shoudong Huang, Zhongjian Chen, Zhiqiang Lu, Wengao Lu, Yacong Zhang","doi":"10.1109/ICICM50929.2020.9292270","DOIUrl":null,"url":null,"abstract":"This paper presents a 16-bit 1MS/s successive approximation register (SAR) analog-to-digital converters (ADC) for precision measurement in 180nm technology. High-bit sampling makes the bridge capacitor become unit capacitance, which solves the problem of fractional capacitor mismatch. In addition, thermometer-coded capacitors are used to improve linearity. The prototype achieves 104.3dB spurious-free dynamic range (SFDR) at 3.9kHz input signal while operating at sampling rate of 1 MS/s and the power consumption is 7.85 mW.","PeriodicalId":364285,"journal":{"name":"2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM)","volume":"931 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICICM50929.2020.9292270","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper presents a 16-bit 1MS/s successive approximation register (SAR) analog-to-digital converters (ADC) for precision measurement in 180nm technology. High-bit sampling makes the bridge capacitor become unit capacitance, which solves the problem of fractional capacitor mismatch. In addition, thermometer-coded capacitors are used to improve linearity. The prototype achieves 104.3dB spurious-free dynamic range (SFDR) at 3.9kHz input signal while operating at sampling rate of 1 MS/s and the power consumption is 7.85 mW.
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