Texas Instruments ADS8513 Handleiding
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1
FEATURESAPPLICATIONS
DESCRIPTION
Successive Approximation Register
Clock
Comparator
CS
CDAC
Buffer
REF
BUF
R1
IN
8kΩ
Internal
+2.5 V Ref
4kΩ
Serial
Data
Out
and
Control
BUSYBUSY
DATACLK
40kΩ
R2
IN
EXT/INT
PWRD
SDATA
CONV
CAP
20kΩ
R3
IN
ADS8513
www.ti.com
......................................................................................................................................................SLAS486C–JUNE2007–REVISEDJANUARY2009
16-Bit,40kSPS,Low-PowerSamplingANALOG-TO-DIGITALCONVERTER
withInternalReferenceandParallel/SerialInterface
•IndustrialProcessControl
23
•40kSPSMinimumSamplingRate
•TestEquipment
•VeryLowPower:24mWTyp
•Robotics
•±3.33V,±5V,±10V,4V,and10VInputRanges
•DSPServoControl
•89dBSNRwith10kHzInput
•MedicalInstrumentation
•±2LSBMaxINL
•PortableDataAcquisitionSystems
•–1/+2LSBMaxDNL,16-BitNMC
•±10mVBPZ,±2.5ppm/°CBPZDrift
•89dBMinSINAD,102dBMinSFDR
TheADS8513isacompletelow-power,single5V
•UsesInternalorExternal2.5VReference
supply,16-bitsamplinganalog-to-digital(A/D)
converter.Itcontainsacomplete16-bit
•NoExternalCalibrationResistorsRequired
capacitor-based,successiveapproximationregister
•Single5VAnalogSupply:
(SAR)A/Dconverterwithsampleandhold,clock,
–32.5mWMaxPowerDissipation
reference,andserialdatainterface.Theconverter
–50µWMaxPower-DownMode
canbeconfiguredforavarietyofinputranges
including±10V,±5V,0Vto10V,and0.5Vto4.5V.A
•SPI™-CompatibleSerialPortupto20MHz,
high-impedance,0.3Vto2.8Vinputisalsoavailable
withMaster/SlaveFeature
withinputimpedancegreaterthan10MΩ.Formost
•GlobalCONVand3-StatedBusforMulti-Chip
inputranges,theinputvoltagecanswingto25Vor
SimultaneousS/HOperation
–25Vwithoutdamagetotheconverter.
•Pin-Compatiblewith16-BitADS7813and
AnSPI-compatibleserialinterfaceallowsdatatobe
12-BitADS7812andADS8512
synchronizedtoaninternalorexternalclock.The
•SO-16Package
ADS8513isspecifiedat40kSPSsamplingrateover
the–40°Cto+85°Cindustrialtemperaturerange.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2SPI,QSPIaretrademarksofMotorola,Inc.
3Allothertrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2007–2009,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
ABSOLUTEMAXIMUMRATINGS
(1)(2)
ELECTRICALCHARACTERISTICS
ADS8513
SLAS486C–JUNE2007–REVISEDJANUARY2009......................................................................................................................................................
www.ti.com
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
PACKAGE/ORDERINGINFORMATION
(1)
MINIMUMNOMINIMUMSPECIFIED
INLMISSINGSINADTEMPERATUREPACKAGEPACKAGEORDERINGTRANSPORT
PRODUCT(LSB)CODES(dB)RANGELEADDESIGNATORNUMBERMEDIA,QTY
ADS8513IBDWTube,20
ADS8513IB±216-Bit89–40°Cto+85°CSO-16DW
ADS8513IBDWRTapeandReel,1000
ADS8513IDWTube,20
ADS8513I±315-Bit88–40°Cto+85°CSO-16DW
ADS8513IDWRTapeandReel,1000
(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
websiteatwww.ti.com.
overoperatingfree-airtemperaturerange(unlessotherwisenoted).
PARAMETERUNIT
R1
IN
±25V
R2
IN
±25V
Analoginputs
R3
IN
±25V
REFV
S
+0.3VtoGND–0.3V
GND±0.3V
Groundvoltagedifferences
V
S
6V
Digitalinputs–0.3Vto+V
S
+0.3V
Maximumjunctiontemperature+165°C
Storagetemperaturerange–65°Cto+150°C
Internalpowerdissipation700mW
Leadtemperature(soldering,1,6mmfromcase10seconds)+260°C
(1)StressesabovethoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Exposuretoabsolute
maximumconditionsforextendedperiodsmayaffectdevicereliability.
(2)Allvoltagevaluesarewithrespecttonetworkgroundterminal.
AtT
A
=–40°Cto+85°C,f
S
=40kSPS,V
S
=5V,andusinginternalreferenceandfixedresistors,unlessotherwisespecified.
ADS8513IADS8513IB
PARAMETERTESTCONDITIONSMINTYPMAXMINTYPMAXUNIT
Resolution1616Bits
ANALOGINPUT
VoltagerangesseeTable1seeTable1V
ImpedanceseeTable1seeTable1Ω
Capacitance4545pF
THROUGHPUTSPEED
ConversiontimeAcquireandconvert2020µs
CompletecycleAcquireandconvert2525µs
ThroughputrateAcquireandconvert4040kSPS
2SubmitDocumentationFeedbackCopyright©2007–2009,TexasInstrumentsIncorporated
ProductFolderLink(s):ADS8513
ADS8513
www.ti.com
......................................................................................................................................................SLAS486C–JUNE2007–REVISEDJANUARY2009
ELECTRICALCHARACTERISTICS(continued)
AtT
A
=–40°Cto+85°C,f
S
=40kSPS,V
S
=5V,andusinginternalreferenceandfixedresistors,unlessotherwisespecified.
ADS8513IADS8513IB
PARAMETERTESTCONDITIONSMINTYPMAXMINTYPMAXUNIT
DCACCURACY
INLIntegrallinearityerror–33–22LSB
(1)
DNLDifferentiallinearityerror–23–12LSB
Nomissingcodes1516Bits
Transitionnoise
(2)
0.60.6LSB
Full-scaleerror
(3)(4)
–0.50.5–0.250.25%
Full-scaleerrordrift1010ppm/°C
Full-scaleerror
(3)(4)
External2.5Vreference–0.50.5–0.250.25%
Full-scaleerrordriftExternal2.5Vreference0.20.2ppm/°C
Bipolarzeroerror
(3)
Bipolarranges–1010–1010mV
BipolarzeroerrordriftBipolarranges2.52.5ppm/°C
Unipolarzeroerror
(3)
Unipolarranges–66–66mV
UnipolarzeroerrordriftUnipolarranges2.52.5ppm/°C
Recoverytimetoratedaccuracyfrom
1µFcapacitortoCAP300300µs
powerdown
(5)
Power-supplysensitivity+4.75V<V
S
<+5.25V±8±8LSB
ACACCURACY
SFDRSpurious-freedynamicrangef
IN
=1kHz,±10V9010096102dB
(6)
THDTotalharmonicdistortionf
IN
=1kHz,±10V–98–90–100–96dB
f
IN
=1kHz,±10V85898789
SINADSignal-to-(noise+distortion)dB
-60dBInput3032
SNRSignal-to-noisef
IN
=1kHz,±10V85898789dB
Usablebandwidth
(7)
130130kHz
Full-powerbandwidth(–3dB)600600kHz
SAMPLINGDYNAMICS
Aperturedelay4040ns
Aperturejitter2020ps
TransientresponseFSstep55µs
Overvoltagerecovery
(8)
750750ns
REFERENCE
InternalreferencevoltageNoload2.482.52.522.482.52.52V
Internalreferencesourcecurrent(must
11µA
useexternalbuffer)
Internalreferencedrift88ppm/°C
Externalreferencevoltagerangefor
2.32.52.72.32.52.7V
specifiedlinearity
ExternalreferencecurrentdrainExternal2.5Vref100100µA
(1)LSBmeansLeastSignificantBit.1LSBforthe±10Vinputrangeis305µV.
(2)Typicalrmsnoiseatworstcasetransitions.
(3)Asmeasuredwithfixedresistors.Adjustabletozerowithexternalpotentiometer.
(4)Full-scaleerroristheworstcaseof–FullScaleor+FullScaledeviationfromidealfirstandlastcodetransitions,dividedbythefull-scale
range;includestheeffectofoffseterror.Testedat–40°Cto+85°C.
(5)TimedelayaftertheADS8513isbroughtoutofPower-Downmodeuntilallinternalsettlingoccursandtheanaloginputisacquiredto
ratedaccuracy.AConvertcommandafterthisdelaywillyieldaccurateresults.
(6)AllspecificationsindBarereferredtoafull-scaleinput.
(7)Usablebandwidthdefinedasfull-scaleinputfrequencyatwhichSignal-to-(Noise+Distortion)degradesto60dB.
(8)Recoverstospecifiedperformanceafter2xFSinputovervoltage.
Copyright©2007–2009,TexasInstrumentsIncorporatedSubmitDocumentationFeedback3
ProductFolderLink(s):ADS8513
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8513 |
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