AD7386四路16位双取样解决方案

1、图图1.AD7386功能框图AD73864MSPS16SARADCADI公司的AD7386是四路4MSPS16位双路同时取样的逐次逼近模数转换器(SARADC),工作电压3.0V-3.6V,吞吐量速率高达4MSPS,模拟输入类型是单端取样，并在CS下降边沿进行转换数字信号.AD7386集成了序列发生器和过取样区块,以提高动态贩毒案和减少低带宽时的噪音.器件还包括缓冲的内部2.5V基准电压，也可采用外接高达3.3V的基准电压.转换过程和数据采集采用标准的控制输入，这样很容易和微处理器或数字信号处理器(DSP)接口，并和1.8V25V和3.3V接口兼容,采用单独的逻辑电源.工作温度40到+125.

2、典型的SNR在外接VREF=3.3V时为87.58,内部VREF=2.5V和OSR=8时为938,典型的INL为1.5LSB.主要用在马达控制位置反抗，马达控制电流检测，声纳，数据采集系统，掺铒光纤放大器(EDFA)和同相正交解调器.本文介绍了AD7386产品亮点和主要特性，功能框图和应用电路，以及评估板EVAL-AD7386FMCZ主要特性，功能框图,电路图和材料清单.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产品亮点：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应用：MotorcontrolpositionfeedbackMotorcontrolcurrentsenseSonarsPowerqualityDataacquisitionsystemsErbiumdopedfiberamplifier(EDFA)applicationsInphaseandquadrat

8、uredemodulation图2.AD7386典型应用电路图评估板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.评估板EVAL-AD7386FMCZ主要特性：Fullfeaturedevaluationboardmultichannel,simultaneoussamplingADCOn-boardreference,referencebu

11、ffer,andADCdriverOn-boardpowersuppliesBoard-compatiblehighspeedsystemdemonstrationplatform(SDP-H1)controllerPCsoftwareforcontrolanddataanalysis图图4.评估板EVAL-AD7386FMCZ功能框图图图4.评估板EVAL-AD7386FMCZ功能框图评估板EVAL-AD7386FMCZ包括:EVAL-AD7386FMCZevaluationboardInstructionstodownloadsoftware图3.评估板EVAL-AD7386FMCZ（左）

12、连接至UEVAL-SDP-CH1Z（右）图3.评估板EVAL-AD7386FMCZ（左）连接至UEVAL-SDP-CH1Z（右）设定图图图7.ADC评估板，电源图图7.ADC评估板，电源图6.ADC评估板，共模和基准缓冲器评估板EVAL-AD7386FMCZ材料清单H3srtnDasbgnaEnrQA4M1dcmmCIICK.CSKMX.,&i述eisiiWctMpAjhaj-帖门中gC47,C5B,CW.C&3,CT-0.Cflh.cai1XJfi330pF,ccnamdccapa配叫NfC-,CCCKanwl御融区*第商凯皿C37.OCHC3r4laC4J.C*.CMWpr.Dsramic

13、capKKiDf,muNilriH&RTOKtWIRgRliE出却OfiSr口130542J圻nMlllWfC&JitlPCQN(TMK5RMlaoYucteriINK2J2W225HTGZ匚幅C52.CK的.C65.C陇工建工浜11JFLcHpcjrric洋部也现K7RMuna(KMJ1圜打E1网窜亡44匚与1,匚j?40.1|ri=.ccrart可由肛XJR,kamuCOfiMCICrtfERACTUcatcs?,co6,C71,6、era.e?4,CT?.ao.10-pf,urdrnhepdillE,XSR,*旭4卜MuiM二襦M21件附口U4tE仅Cfll.CB2CB3.CKptepe

14、wC79心覆3luF.cersmkaixratxft,Q桃同京HCflgaKATM口比谗2.声；anm忙rapaator,XSR,9srwji-pJFp6Munxi0IXEMiitrt?.Mi旭1ri早NXPSsrEkondurloi隔切瓶阻力5051LEUchphup-wenH5nm旧制力忖的b的M口Ktmrtk“T1侬&EXTOF.lrnKtixPZff恻18心1imigm|xkAmpliKl如刮履IBI4G1CCRqjNDISMDJ.filCl.ijN&lCcrnccbcrPCBg4pdno,blackClDfnpOiWllG.Gxswm7P.l13-01血LIIndueLodpawr,

15、wounddieTOTVLTlSEJlMT-ErllMLK1,LK2-,LKJ.LMIjorfwcborItBh3迷的3Wminptr%S4L,vfttkklpricedeirtuEMlHa-filnMM4KEI4U1H4.LKSLwhteiwB,Lp*比皿,根hhaadMLrchrou由ddaihlerwslrugh2.5-1fnifipft仇gj&4iYifiRit旭qhMlidesaldcrli所凶此-1口上炉卬PICDnncctDrPCBOjDJSnch&qu4旧podI4dl5amtsciu,.1!Sl#-lD7Jll-TI-EP7rP3CCnhCCrPiZBhgM.lbw中刚。Mi

16、厘l叱TIW-K7JK.G-5F4Em沌gPC加mgijlwk35mmWimdElKfflcSJHJH部。chGMBHKtlaFoncaD&sIghalerEJMcripthmNanufmclueiFirlNurrtwrF5ZCofnpdprFCH史rmi睥135mmpMchj由牙安仰值APMmulMWCwhcIdtKtilnQ-4nrnkcinc.ASP1M.O1ftlaHI?.RH4麻岫RM.R36.R77.RJfL阳J就r,pTMlgnttirkiirchin,HfflWJ福弗应l-IE归F49R6T的L口1乱口1认如口曲&般？lOkJJFZ-slcpreaoniJikkClrndip,no吠u罔n或巾上圜9EKJU如期Ita.flJI.R.?.R3XF55.R11RMB.R砧，KJJ,R3fi.HJ9,m-tW.3U2,FM5.W5.Ft6.ML3W.*抽.R?l.町E?.m.m.Mii,它,贴q.m端dnWdMmE5MP-MiiikqmpWtY31WiyMiMM?iF4r制S3皿绛出TK炉MlWNE*K川M北已IWfiOnt卧2RKBW1XM9.H51,R5J.ffJ5zwnlEstxai5口wn.omiE孙北GO