Texas Instruments ADS8339 Handleiding
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IN+
REF
0 V
Pseudo-Differential Input
+100 mV
0 V
IN
r100 mV
100 mV
100 mV
IN+
IN
V
DIFF
= (IN+) t (IN) = 0 V to REF
NOTE: (IN+) (IN)
ADS8339
GND
+VA
+VBD
SDO
SDI
CONVST
REFIN
4.5 V to 5.5 V
2.375 V to +VA
2.25 V to +VA + 0.1 V
SCLK
100 mV
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ADS8339
SBAS677A–JUNE2014–REVISEDOCTOBER2014
ADS833916-Bit,250-kSPS,SerialInterface,Micro-Power,Miniature,
SARAnalog-to-DigitalConverter
1Features3Description
TheADS8339isa16-bit,250-kSPS,analog-to-digital
1
•SampleRate:250kHz
converter(ADC).Thedeviceoperateswitha2.25-V
•16-BitResolution
to5.5-Vexternalreference.Thedeviceincludesa
•ZeroLatencyatFullSpeed
capacitor-based,successive-approximationregister
(SAR)ADCwithaninherentsample-and-holdcircuit.
•UnipolarSingle-EndedInputRange:
–0VtoV
ref
Thedeviceincludesa25-MHz,SPI-compatibleserial
interface.Theinterfaceisdesignedtosupportdaisy-
•SPI™-CompatibleSerialInterfacewithDaisy-
chainingorcascadingofmultipledevices.
ChainOption
Furthermore,abusyindicatormakessynchronizing
•UsesInternalClockforConversion
withthedigitalhosteasy.Theunipolar,single-ended
•ExcellentPerformance:
inputrangeforthedevicesupportsaninputswingof
0VtoV
ref
.
–93.6dBSNR(typ)at10-kHzInput
––106dBTHD(typ)at10-kHzInput
Thedeviceisoptimizedforlow-poweroperationand
powerconsumptionscalesdirectlywithspeed.This
–±2.0LSBINL(max)
featuremakesthedeviceattractiveforlowerspeed
–±1.0LSBDNL(max)
applications.TheADS8339isavailableinaVSSOP-
•Low-PowerDissipation:
10package.
–17.5mW(typ)at250kSPS
DeviceInformation
(1)
•PowerScalesLinearlywithSpeed:
PARTNUMBERPACKAGEBODYSIZE(NOM)
–1.75mWat25kSPS
ADS8339VSSOP(10)3.00mm×3.00mm
•PowerDissipationDuringPower-DownState:
(1)Forallavailablepackages,seetheorderableaddendumat
–0.25μW(typ)
theendofthedatasheet.
•Package:VSSOP-10
space
space
2Applications
space
•Battery-PoweredEquipment
•DataAcquisitionSystems
•InstrumentationandProcessControls
•MedicalElectronics
•OpticalNetworking
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS8339
SBAS677A–JUNE2014–REVISEDOCTOBER2014
www.ti.com
TableofContents
9.2FunctionalBlockDiagram.......................................16
1Features..................................................................1
9.3FeatureDescription.................................................17
2Applications...........................................................1
9.4DeviceFunctionalModes........................................18
3Description.............................................................1
10ApplicationandImplementation........................26
4RevisionHistory.....................................................2
10.1ApplicationInformation..........................................26
5DeviceFamily.........................................................3
10.2TypicalApplication................................................30
6PinConfigurationandFunctions.........................3
10.3Do'sandDon'ts.....................................................31
7Specifications.........................................................4
11Power-SupplyRecommendations.....................31
7.1AbsoluteMaximumRatings......................................4
12Layout...................................................................32
7.2HandlingRatings.......................................................4
12.1LayoutGuidelines.................................................32
7.3RecommendedOperatingConditions.......................4
12.2LayoutExample....................................................32
7.4ThermalInformation..................................................5
13DeviceandDocumentationSupport.................33
7.5ElectricalCharacteristics...........................................5
13.1DocumentationSupport........................................33
7.6TimingRequirements................................................7
13.2Trademarks...........................................................33
7.7TypicalCharacteristics..............................................8
13.3ElectrostaticDischargeCaution............................33
8ParametricMeasurementInformation...............15
13.4Glossary................................................................33
8.1TimingDiagrams.....................................................15
14Mechanical,Packaging,andOrderable
9DetailedDescription............................................16
Information...........................................................33
9.1Overview.................................................................16
4RevisionHistory
ChangesfromOriginal(June2014)toRevisionAPage
•Madechangestoproductpreviewdatasheet........................................................................................................................1
2SubmitDocumentationFeedbackCopyright©2014,TexasInstrumentsIncorporated
ProductFolderLinks:ADS8339
1
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3
4
5
10
9
8
7
6
REFIN
+VA
IN+
IN
GND
+VBD
SDI
SCLK
SDO
CONVST
ADS8339
www.ti.com
SBAS677A–JUNE2014–REVISEDOCTOBER2014
5DeviceFamily
(1)
SAMPLINGRATE16-BIT,SINGLE-ENDED16-BIT,DIFFERENTIAL18-BIT,DIFFERENTIAL
100kSPSADS8866ADS8867ADS8887
250kSPSADS8339——
400kSPSADS8864ADS8865ADS8885
500kSPSADS8319ADS8318—
680kSPSADS8862ADS8863ADS8883
1MSPSADS8860ADS8861ADS8881
(1)Alldevicesarepin-to-pincompatible.TheADS8339,ADS8319,andADS8318requirea4.5-Vto5.5-Vanalogsupply.Theremaining
devicesusea2.7-Vto3.6-Vanalogsupply.
6PinConfigurationandFunctions
DGSPackage
VSSOP-10
(TopView)
PinFunctions
PIN
FUNCTIONDESCRIPTION
NO.NAME
Reference(positive)input.DecoupletoGNDwitha0.1-μFbypasscapacitoranda10-μFstorage
1REFINInput
capacitor.
2+VASupplyAnalogpowersupply.DecouplewiththeGNDpin.
3+INInputNoninvertinganalogsignalinput
Invertinganalogsignalinput.Notethatthisinputhasalimitedrangeof±0.1Vandistypically
4–INInput
groundedattheinputdecouplingcapacitor.
Deviceground.Notethatthispinisacommongroundpinforboththeanalogpowersupply
5GNDSupply
(+VA)anddigitalI/Osupply(+VBD).
Convertinput.CONVSTalsofunctionsastheCSinputin3-wireinterfacemode.Refertothe
6CONVSTInput
DescriptionandTimingDiagramssectionsformoredetails.
7SDOOutputSerialdataoutput
8SCLKInputSerialI/Oclockinput.Data(ontheSDOoutput)aresynchronizedwiththisclock.
Serialdatainput.TheSDIlevelatthestartofaconversionselectsthemodeofoperation(such
9SDIInputasCSordaisy-chainmode).SDIalsoservesastheCSinputin4-wireinterfacemode.Referto
theDescriptionandTimingDiagramssectionsformoredetails.
10+VBDSupplyDigitalI/Opowersupply.DecouplewiththeGNDpin.
Copyright©2014,TexasInstrumentsIncorporatedSubmitDocumentationFeedback3
ProductFolderLinks:ADS8339
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8339 |
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