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ADS5237IPAG;ADS5237IPAGT;ADS5237IPAGTG4;ADS5237IPAGG4;ADS5237EVM;中文规格书,Datasheet资料

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BurrĆBrown Productsfrom Texas InstrumentsADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

Dual,10-Bit,65MSPS,+3.3VAnalog-to-DigitalConverter

FEATURES

•Single+3.3VSupply

•HighSNR:61.7dBFSatfIN=5MHz•TotalPowerDissipation:InternalReference:366mWExternalReference:330mW•InternalorExternalReference•LowDNL:±0.1LSB

•FlexibleInputRange:1.5VPPto2VPP•TQFP-64Package

DESCRIPTION

TheADS5237isadual,high-speed,highdynamicrange,10-bit,pipelinedanalog-to-digitalconverter(ADC).Thisdeviceincludesahigh-bandwidthsample-and-holdamplifierthatgivesexcellentspuriousperformanceuptoandbeyondtheNyquistrate.Thedifferentialnatureofthesample-and-holdamplifierandADCcircuitryminimizeseven-orderharmonicsandgivesexcellentcommon-modenoiseimmunity.

TheADS5237providesforsettingthefull-scalerangeoftheconverterwithoutanyexternalreferencecircuitry.Theinternalreferencecanbedisabled,allowinglow-drive,externalreferencestobeusedforimprovedtrackinginmultichannelsystems.

TheADS5237providesanover-rangeindicatorflagtoindicateaninputsignalthatexceedsthefull-scaleinputrangeoftheconverter.Thisflagcanbeusedtoreducethegainoffront-endgaincontrolcircuitry.Thereisalsoanoutputenablepintoallowformultiplexingandtestingonaprintedcircuitboard(PCB).

TheADS5237employsdigitalerrorcorrectiontechniquestoprovideexcellentdifferentiallinearityfordemandingimagingapplications.TheADS5237isavailableinaTQFP-64package.

AVDDSDATASENSCLKSELVDRVOEAAPPLICATIONS

••••••

CommunicationsIFProcessingCommunicationsBaseStationsTestEquipmentMedicalImagingVideoDigitizingCCDDigitizing

ADS5237SerialInterfaceDISABLE_PLLINAVININA10-BitPipelinedADCErrorCorrectionLogic3-StateOutputD9AD0AOVRADVAINT/EXTCMREFTREFBINBVININBErrorCorrectionLogicDVB10-BitPipelinedADC3-StateOutputD9BD0BOVRBSTPDOEB······S/HInternalReferenceTiming/Duty󰀀Cycle󰀀Adjust󰀀(PLL)CLKS/HPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.

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ADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

www.ti.comThisintegratedcircuitcanbedamagedbyESD.TexasInstrumentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.

ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.

ORDERINGINFORMATION(1)

PRODUCTADS5237(1)

PACKAGE-LEAD

TQFP-64

PACKAGEDESIGNATOR

PAG

SPECIFIEDTEMPERATURE

RANGE–40°Cto+85°C

PACKAGEMARKINGADS5237IPAG

ORDERINGNUMBERADS5237IPAGADS5237IPAGT

TRANSPORTMEDIA,QUANTITY

Tray,160TapeandReel,250

ForthemostcurrentpackageandorderinginformationseethePackageOptionAddendumattheendofthisdocument,orseetheTIwebsiteatwww.ti.com.ABSOLUTEMAXIMUMRATINGS(1)

Overoperatingfree-airtemperaturerange,unlessotherwisenoted.

ADS5237

Supplyvoltagerange,AVDDSupplyvoltagerange,VDRVVoltagebetweenAVDDandVDRVVoltageappliedtoexternalREFpinsAnaloginputpins(2)Casetemperature

Operatingfree-airtemperaturerange,TALeadtemperatureJunctiontemperatureStoragetemperature(1)(2)

–0.3to+3.8–0.3to+3.8–0.3to+0.3–0.3to+2.4

–0.3tomin[3.3,(AVDD+0.3)]

+100–40to+85+260+105–65to+150

UNITVVVVV°C°C°C°C°C

StressesabovethoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Exposuretoabsolutemaximumconditionsforextendedperiodsmayaffectdevicereliability.

Thedcvoltageappliedontheinputpinsshouldnotgobelow–0.3V.Also,thedcvoltageshouldbelimitedtothelowerofeither3.3Vor(AVDD+0.3V).Iftheinputcangohigherthan+3.3V,thenaresistorgreaterthanorequalto25Ωshouldbeaddedinserieswitheachoftheinputpins.Also,thedutycycleoftheovershootbeyond+3.3Vshouldbelimited.Theovershootdutycyclecanbedefinedeitherasapercentageofthetimeofovershootoveraclockperiod,orovertheentiredevicelifetime.Forapeakvoltagebetween+3.3Vand+3.5V,adutycycleupto10%isacceptable.Forapeakvoltagebetween+3.5Vand+3.7V,theovershootdutycycleshouldnotexceed1%.Anyovershootbeyond+3.7Vshouldberestrictedtolessthan0.1%dutycycle,andneverexceed+3.9V.

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ADS5237www.ti.comSBAS420A–AUGUST2007–REVISEDOCTOBER2007

RECOMMENDEDOPERATINGCONDITIONS

ADS5237

PARAMETER

SUPPLIESANDREFERENCESAnalogsupplyvoltage,AVDDOutputdriversupplyvoltage,VDRVREFT—ExternalreferencemodeREFB—Externalreferencemode

REFCM=(REFT+REFB)/2–ExternalreferencemodeAnaloginputcommon-moderangeCLOCKINPUTANDOUTPUTSADCLKInputsamplerate

PLLenabled(default)PLLdisabled

ADCLKdutycycle

PLLenabled(default)

Low-levelvoltageclockinputHigh-levelvoltageclockinputOperatingfree-airtemperature,TAThermalcharacteristics:

θJAθJC

(1)(2)

42.818.7

°C/W°C/W

2.2–40

+85

550.6

MSPSVV°C

202

6530(2)

MSPSMSPS

(1)

MIN3.03.01.8750.950.75

TYP3.33.32.01.0VCM±50mV

1.0VCM50mV

MAX3.63.62.051.1251.1

UNITVVVVVVV

Reference=(REFT–REFB)–Externalreferencemode

Thesevoltagesneedtobesetto1.5V±50mViftheyarederivedindependentofVCM.

WhenthePLLisdisabled,theclockdutycycleneedstobecontrolledwell,especiallyathigherspeeds.A45%–55%dutycyclevariationisacceptableuptoafrequencyof30MSPS.IfthedeviceneedstobeoperatedinthePLLdisabledmodebeyond30MSPS,thenthedutycycleneedstobemaintainedwithina48%–52%dutycycle.

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ADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

www.ti.comELECTRICALCHARACTERISTICS

TMIN=–40°CandTMAX=+85°C.TypicalvaluesareatTA=+25°C,clockfrequency=65MSPS,50%clockdutycycle,AVDD=3.3V,VDRV=3.3V,transformer-coupledinputs,–1dBFS,ISET=56.2kΩ,andinternalvoltagereference,unlessotherwisenoted.

ADS5237

PARAMETER

DCACCURACY

NomissingcodesDNLDifferentialnonlinearityINLIntegralnonlinearity

Offseterror(1)

Offsettemperaturecoefficient(2)Fixedattenuationinchannel(3)

FixedattenuationmatchingacrosschannelsGainerror/referenceerror(4)Gainerrortemperaturecoefficient

POWERREQUIREMENTSInternalReference

Powerdissipation(5)Totalpowerdissipation

ExternalReference

PowerdissipationTotalpowerdissipationVREFTVREFB

TotalPower-DownREFERENCEVOLTAGESVREFTReferencetop(internal)VREFBReferencebottom(internal)VCMCommon-modevoltage

VCMoutputcurrent(6)

VREFTReferencetop(external)VREFBReferencebottom(external)

Externalreferencecommon-modeExternalreferenceinputcurrent

(1)(2)(3)(4)(5)(6)(7)

(7)

(5)

TESTCONDITIONSMINTYPTested

MAXUNIT

fIN=5MHzfIN=5MHz

–0.5–1–0.75

±0.1±0.10.2±610.01

+0.5+1+0.75

LSBLSB%FSppm/°C%FS

0.2+3.5

dB%FSppm/°C

–3.5±1.0±40

Analogonly(AVDD)Outputdriver(VDRV)

260106366

297136433

mWmWmWmWmWmW

Analogonly(AVDD)Outputdriver(VDRV)

1.8750.95881.90.91.4

±50mVchangeinvoltage

1.875

22410633021

2.051.125

mWmWmW

2.01.01.5±2

2.11.11.6

VVVmAV

1.125

VCM±50mV

1.0

VVmA

Offseterroristhedeviationoftheaveragecodefrommid-codewith–1dBFSsinusoidfromidealmid-code(512).Offseterrorisexpressedintermsofpercentoffull-scale.

IftheoffsetattemperaturesT1andT2isO1andO2,respectively(whereO1andO2aremeasuredinLSBs),theoffsettemperaturecoefficientinppm/°Ciscalculatedas(O1–O2)/(T1–T2)×16/1024.

Fixedattenuationinthechannelarisesbecauseofafixedattenuationinthesample-and-holdamplifier.Whenthedifferentialvoltageattheanaloginputpinsischangedfrom–VREFto+VREF,theswingoftheoutputcodeisexpectedtodeviatefromthefull-scalecode(1024LSB)bytheextentofthisfixedattenuation.NOTE:VREFisdefinedas(REFT–REFB).

Thereferencevoltagesaretrimmedatproductionsothat(VREFT–VREFB)iswithin±35mVoftheidealvalueof1V.Thisspecificationdoesnotincludefixedattenuation.

Supplycurrentcanbecalculatedfromdividingthepowerdissipationbythesupplyvoltageof3.3V.TheVCMoutputcurrentspecifiedisthedriveoftheVCMbufferifloadedexternally.Averagecurrentdrawnfromthereferencepinsintheexternalreferencemode.

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ADS5237www.ti.comSBAS420A–AUGUST2007–REVISEDOCTOBER2007

ELECTRICALCHARACTERISTICS(continued)

ADS5237

PARAMETER

ANALOGINPUT

DifferentialinputcapacitanceAnaloginputcommon-moderangeDifferentialinputvoltagerangeVoltageoverloadrecoverytime(8)Inputbandwidth

DIGITALDATAINPUTS

Logicfamily

VIHHigh-levelinputvoltageVILLow-levelinputvoltageCINInputcapacitanceDIGITALOUTPUTS

DataformatLogicfamilyLogiccoding

Lowoutputvoltage(IOL=50μA)Highoutputvoltage(IOH=50μA)3-stateenabletime3-statedisabletimeOutputcapacitance

SERIALINTERFACE

SCLKSerialclockinputfrequencyCONVERSIONCHARACTERISTICS

SamplerateDatalatency

(8)

MSPSCLKcycles

MHz

+2.4

223

Straightoffsetbinary(9)

CMOS

StraightoffsetbinaryorBTC

+0.4

VVClocksClockspF

VIN=3.3VVIN=3.3V

2.2

0.6

+3VCMOSCompatible

VVpF

–3dBFSinput,25Ωseries

resistance

InternalreferenceExternalreference

3VCM±0.052.02

2.02×(VREFT–VREFB)

3300

pFVVPPVPPCLKcyclesMHz

TESTCONDITIONS

MIN

TYP

MAX

UNIT

(9)

AdifferentialON/OFFpulseisappliedtotheADCinput.ThedifferentialamplitudeofthepulseinitsON(high)stateistwicethe

full-scalerangeoftheADC,whilethedifferentialamplitudeofthepulseinitsOFF(low)stateiszero.TheoverloadrecoverytimeoftheADCismeasuredasthetimerequiredbytheADCoutputcodetosettlewithin1%offull-scale,asmeasuredfromitsmid-codevaluewhenthepulseisswitchedfromON(high)toOFF(low).Optionforbinarytwo’scomplementoutput.

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ADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

www.ti.comACCHARACTERISTICS

TMIN=–40°CandTMAX=+85°C.TypicalvaluesareatTA=+25°C,clockfrequency=maximumspecified,50%clockdutycycle,AVDD=3.3V,VDRV=3.3V,–1dBFS,ISET=56.2kΩ,andinternalvoltagereference,unlessotherwisenoted.

ADS5237

PARAMETER

DYNAMICCHARACTERISTICS

fIN=5MHz

SFDRSpurious-freedynamicrange

fIN=32.5MHzfIN=70MHzfIN=5MHz

HD22nd-orderharmonicdistortion

fIN=32.5MHzfIN=70MHzfIN=5MHz

HD33rd-orderharmonicdistortion

fIN=32.5MHzfIN=70MHzfIN=5MHz

SNRSignal-to-noiseratio

fIN=32.5MHzfIN=70MHzfIN=5MHz

SINADSignal-to-noiseanddistortion

fIN=32.5MHzfIN=70MHz

Crosstalk

IMD3

Two-tone,third-orderintermodulationdistortion

5MHzfull-scalesignalappliedtoonechannel;

measurementtakenonthechannelwithnoinputsignal

f1=4MHzat–7dBFSf2=5MHzat–7dBFS

60.460.5758275

86858392878586858361.761.060.761.660.960.5–8590.9

dBcdBcdBcdBcdBcdBcdBcdBcdBcdBFSdBFSdBFSdBFSdBFSdBFSdBcdBFS

CONDITIONS

MIN

TYP

MAX

UNIT

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ADS5237www.ti.comSBAS420A–AUGUST2007–REVISEDOCTOBER2007

TIMINGDIAGRAMS

tAAnalogInputNN󰀀+󰀀2N󰀀+󰀀3N󰀀+󰀀1tCCLKt1DATA[D9:D0]tDVDVt2N󰀀+󰀀4OEtOEDATAD9:D0tOETIMINGCHARACTERISTICS(1)

TypicalvaluesatTA=+25°C,AVDD=VDRV=3.3V,samplingrateandPLLstateareasindicated,inputclockat50%dutycycle,andtotalcapacitiveloading=10pF,unlessotherwisenoted.

PARAMETER

tAAperturedelay

Aperturejittert1Datasetuptime(2)t2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

(4)(3)

MIN

65MSPSWithPLLON

TYP2.11.0

MAXUNITSnspsnsnsClocks

26.30.53010

3.28.5624011.5

35514

ns%ns

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledge

(1)(2)(3)(4)Specificationsassuredbydesignandcharacterization;notproductiontested.

Measuredfromdatabecomingvalid(atahighlevel=2.0Vandalowlevel=0.8V)tothe50%pointofthefallingedgeofDV.Measuredfromthe50%pointofthefallingedgeofDVtothedatabecominginvalid.Measuredbetween20%to80%oflogiclevels.

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ADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

www.ti.comTIMINGCHARACTERISTICS(continued)

TypicalvaluesatTA=+25°C,AVDD=VDRV=3.3V,samplingrateandPLLstateareasindicated,inputclockat50%dutycycle,andtotalcapacitiveloading=10pF,unlessotherwisenoted.

PARAMETER

tAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledgetAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledgetAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledgetAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledgetAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledge

0.5302010200.53020

20MSPSWithPLLOFF

2.11.01225624525

3.55530

nspsnsnsClocksns%ns

10200.53016

20MSPSWithPLLON

2.11.01225624525

3.55530

nspsnsnsClocksns%ns

8140.53013.5

30MSPSWithPLLOFF

2.11.01019624519

3.55521

nspsnsnsClocksns%ns

3.711.50.53011.5

40MSPSWithPLLON

2.11.05.513.5624016

35518.5

nspsnsnsClocksns%ns

3.210MIN

50MSPSWithPLLON

2.11.04.511624013.5

35515.5

nspsnsnsClocksns%ns

TYP

MAX

UNITS

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ADS5237www.ti.comSBAS420A–AUGUST2007–REVISEDOCTOBER2007

TIMINGCHARACTERISTICS(continued)

TypicalvaluesatTA=+25°C,AVDD=VDRV=3.3V,samplingrateandPLLstateareasindicated,inputclockat50%dutycycle,andtotalcapacitiveloading=10pF,unlessotherwisenoted.

PARAMETER

tAAperturedelay

Aperturejittert1Datasetuptimet2DataholdtimetDDatalatencytDR,tDFDatarise/falltime

Datavalid(DV)dutycycletDVInputclockrisingtoDVfalledge

0.530200150200MIN

2MSPSWithPLLOFF

2.11.02002506245225

3.555250

nspsnsnsClocksns%ns

TYP

MAX

UNITS

SERIALINTERFACETIMING

Outputs󰀀change󰀀onnext󰀀rising󰀀clock󰀀edgeafter󰀀SEN󰀀goes󰀀high.CLKSENStart󰀀Sequencet6t2t1Data󰀀latched󰀀oneach󰀀rising󰀀edge󰀀of󰀀SCLK.t7SCLKt3SDATAt4t5D7(MSB)D6D5D4D3D2D1D0NOTE:DataareshiftedinMSBfirst.

ADS5237

PARAMETER

t1t2t3t4t5t6t7

DESCRIPTIONSerialCLKperiodSerialCLKhightimeSerialCLKlowtimeDatasetuptimeDataholdtimeSENfalltoSCLKriseSCLKrisetoSENrise

MIN5020205588

TYP

MAX

UNITnsnsnsnsnsnsns

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ADS5237SBAS420A–AUGUST2007–REVISEDOCTOBER2007

www.ti.comTable1.SERIALREGISTERMAP(1)(2)

ADDRESS

D70000000000000000

D60000000000000000

D50000000011111111

D40000000000011111

D3XXXXXX0100101XXX

D2XXXX01XX0100X1XX

DATA

D1XX01XXXX000XXX01

D001XXXXXX00000000

Normalmode

Power-downbothchannelsStraightoffsetbinaryoutputBinarytwo'scomplementoutputChannelBdigitaloutputsenabledChannelBdigitaloutputs3-statedChannelAdigitaloutputsenabledChannelAdigitaloutputs3-stated

NormalmodeAlldigitaloutputssetto'1'Alldigitaloutputssetto'0'

NormalmodeChannelApowereddownChannelBpowereddownPLLenabled(default)

PLLdisabledDESCRIPTION

(1)(2)X=donotcare.

Shownforthecasewhereserialinterfaceisused.

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分销商库存信息:

ADS5237IPAGADS5237IPAGG4

ADS5237IPAGTADS5237EVM

ADS5237IPAGTG4

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