数字CMOS工艺下10位580KSPS逐次逼近型模数转换器设计

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1、上海交通大学硕士学位论文数字CMOS工艺下10位580kSps逐次逼近型模数转换器设计姓名：周文婷申请学位级别：硕士专业：电路与系统指导教师：郭炜20070101A10BIT580KSPSSUCCESSIVEAPPROXIMATIONREGISTERADCIN0.18UMCMOSPROCESSABSTRACTSuccessiveapproximationregisteranalog-to-digitalconverterisacommonarchitectureformiddletohighaccuracyapplicati

2、onswhichrequirethesamplingratelessthan5MSps.Ithasthecharacteristicsoflowpowerandsmallsize,thusiswidelyusedinmanyapplicationfields,suchasportableinstruments,peninputquantization,industrycontrolandsignalcollector,etc.Inthisthesis,wedesignafullyintegratedCMOSSARADCfor

3、portablesystems.ItisbasedonSMIC0.18umLogic1P5Mprocess,usingChargeRedistributionarchitecture,thuscharacterizedbylowpower.WeanalyzeeveryfactorwhichmayaffecttheaccuracyofChargeRedistributionSARADCandproposedseveralconclusionswhichcanalsobeusedinthedesignofothertypehig

4、hresolutionSARADC.ThecircuitdesignissimulatedandlayoutwithEDAtools.Thesimulationresultsindicatethattheeffectiveaccuracyis9.8bitandthesamplingratecanreach580kSpsunderdifferentcombinationofcornersandtemperature.TheareaofSARADCis500um×750um.KEYWORDS:SuccessiveApproxim

5、ationRegister,Analog-to-DigitalConverter,ChargeRedistribution,HighResolution,CMOSIntegratedCircuit图片目录图1闪速型的基本结构·························································································14图2逐次逼近型的基本结构··················································

6、·······························14图3过采样型的基本结构·····················································································15图4流水型的基本结构·························································································16图53位理想ADC的输出特性曲线和量化噪声············

7、······································17图6误差特性示意图····························································································18图7SARADC的系统结构图···················································································21图8电荷注入分析图··············

8、··············································································24图9电荷注入补偿·························································