1、圖圖1.AD7386功能框圖AD73864MSPS16SARADCADI公司的AD7386是四路4MSPS16位雙路同時(shí)取樣的逐次逼近模數(shù)轉(zhuǎn)換器(SARADC),工作電壓3.0V-3.6V,吞吐量速率高達(dá)4MSPS,模擬輸入類型是單端取樣，并在CS下降邊沿進(jìn)行轉(zhuǎn)換數(shù)字信號(hào).AD7386集成了序列發(fā)生器和過取樣區(qū)塊,以提高動(dòng)態(tài)販毒案和減少低帶寬時(shí)的噪音.器件還包括緩沖的內(nèi)部2.5V基準(zhǔn)電壓，也可采用外接高達(dá)3.3V的基準(zhǔn)電壓.轉(zhuǎn)換過程和數(shù)據(jù)采集采用標(biāo)準(zhǔn)的控制輸入，這樣很容易和微處理器或數(shù)字信號(hào)處理器(DSP)接口，并和1.8V25V和3.3V接口兼容,采用單獨(dú)的邏輯電源.工作溫度40到+125.

2、典型的SNR在外接VREF=3.3V時(shí)為87.58,內(nèi)部VREF=2.5V和OSR=8時(shí)為938,典型的INL為1.5LSB.主要用在馬達(dá)控制位置反抗，馬達(dá)控制電流檢測(cè)，聲納，數(shù)據(jù)采集系統(tǒng)，摻鉺光纖放大器(EDFA)和同相正交解調(diào)器.本文介紹了AD7386產(chǎn)品亮點(diǎn)和主要特性，功能框圖和應(yīng)用電路，以及評(píng)估板EVAL-AD7386FMCZ主要特性，功能框圖,電路圖和材料清單.TheAD7386isa16-bit,dualsimultaneoussampling,highspeed,successiveapproximationregister(SAR)analog-to-digitalconver

3、ter(ADC)thatoperatesfroma3.0Vto3.6Vpowersupplyandfeaturesthroughputratesofupto4MSPS.Theanaloginputtypesaresingle-endedandaresampledandconvertedonthefallingedgeofCS.TheAD7386hasanon-chipsequencerandintegratedon-chipoversamplingblockstoimprovedynamicrangeandreducenoiseatlowerbandwidths.Abufferedintern

4、al2.5Vreferenceisincluded.Alternatively,anexternalreferenceupto3.3Vcanbeused.Theconversionprocessanddataacquisitionusestandardcontrolinputs,allowingeasyinterfacingtomicroprocessorsordigitalsignalprocessors(DSPs).TheAD7386iscompatiblewith1.8V,2.5V,and3.3Vinterfaces,usingtheseparatelogicsupply.TheAD73

5、86isavailableina16-leadLFCSPpackagewithoperationspecifiedfrom40to+125.AD7386產(chǎn)品亮點(diǎn)：channel,dualsimultaneoussamplingADC.Pin-compatibleproductfamily.High4MSPSthroughputrate.Space-saving3mmx3mmLFCSPpackage.IntegratedoversamplingblocktoincreasedynamicrangeandSNRandreduceSCLKspeedrequirements.Single-endeda

6、naloginputs.Smallsamplingcapacitorreducesamplifierdriveburden.AD7386主要特性:16-bitdualsimultaneoussamplingSARADCSingle-endedanaloginputsQuadchannelwith2:1multiplexersChannelsequencermodeHighthroughputrateofupto4MSPSOn-chipoversamplingfunctionsSNR(typical).5dB,VREF=3.3VexternaldBwithOSR=8,VREF=2.5Vinter

7、nalINL(typical):1.5LSBsResolutionboostfunctionVinternalreferenceat10ppm/(maximum)Alertfunction-40to+125temperaturerange16-leadLFCSP,3mmx3mmAD7386應(yīng)用：MotorcontrolpositionfeedbackMotorcontrolcurrentsenseSonarsPowerqualityDataacquisitionsystemsErbiumdopedfiberamplifier(EDFA)applicationsInphaseandquadrat

8、uredemodulation圖2.AD7386典型應(yīng)用電路圖評(píng)估板EVAL-AD7386FMCZEvaluatingtheAD73864-Channel16-bit,DualSimultaneousSampling,SARADCTheEVAL-AD7386FMCZisafullfeaturedevaluationboarddesignedtoevaluateallfeaturesoftheAD7386analog-to-digitalconverters(ADCs).TheevaluationboardcanbecontrolledbytheEVAL-SDP-CH1Zviathe160-wa

9、ysystemdemonstrationplatform(SDP)connector,P7.TheEVAL-SDP-CH1ZboardcontrolstheevaluationboardsthroughaUSBportofaPCusingtheanalysiscontrolevaluation(ACE)software,whichisavailablefordownloadfromtheACEsoftwarepage.CompletespecificationsfortheAD7386areprovidedintheAD7386datasheet.Consultthesespecificati

10、onsinconjunctionwiththisuserguidewhenusingtheevaluationboard.FulldetailsontheEVAL-SDP-CH1ZareavailableontheSDP-H1productpage.ThecomprehensiveACEuserguideisavailableontheACEsoftwarepage.評(píng)估板EVAL-AD7386FMCZ主要特性：Fullfeaturedevaluationboardmultichannel,simultaneoussamplingADCOn-boardreference,referencebu

11、ffer,andADCdriverOn-boardpowersuppliesBoard-compatiblehighspeedsystemdemonstrationplatform(SDP-H1)controllerPCsoftwareforcontrolanddataanalysis圖圖4.評(píng)估板EVAL-AD7386FMCZ功能框圖圖圖4.評(píng)估板EVAL-AD7386FMCZ功能框圖評(píng)估板EVAL-AD7386FMCZ包括:EVAL-AD7386FMCZevaluationboardInstructionstodownloadsoftware圖3.評(píng)估板EVAL-AD7386FMCZ（左）

12、連接至UEVAL-SDP-CH1Z（右）圖3.評(píng)估板EVAL-AD7386FMCZ（左）連接至UEVAL-SDP-CH1Z（右）設(shè)定圖圖圖7.ADC評(píng)估板，電源圖圖7.ADC評(píng)估板，電源圖6.ADC評(píng)估板，共模和基準(zhǔn)緩沖器評(píng)估板EVAL-AD7386FMCZ材料清單H3srtnDasbgnaEnrQA4M1dcmmCIICK.CSKMX.,&i述eisiiWctMpAjhaj-帖門中g(shù)C47,C5B,CW.C&3,CT-0.Cflh.cai1XJfi330pF,ccnamdccapa配叫NfC-,CCCKanwl御融區(qū)*第商凱皿C37.OCHC3r4laC4J.C*.CMWpr.Dsramic

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