Texas Instruments ADS8588S Handleiding
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AIN_1P
AIN_1GND
AIN_2P
AIN_2GND
AIN_7P
AIN_7GND
AIN_8P
AIN_8GND
16-Bit
SAR
ADC
2.5 V
REF
REFGND
DGND
AGND
DVDD
AVDD
ADS8588S
ADC
Driver
REFIN/REFOUT
REFCAPB
REFSEL
Digital Filter
OS2
OS0
OS1
SAR
Logic
and
Digital Control
DB[15:0]
DOUTA
DOUTB
PAR/SER
RANGE
RD/SCLK
CS
RESET
CONVSTA, CONVSTB
FRSTDATA
STBY
REFCAPA
BUSY
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
16-Bit
SAR
ADC
16-Bit
SAR
ADC
16-Bit
SAR
ADC
SER/PAR
Interface
Copyright © 2017, Texas Instruments IncorporatedNOTE: There are 8 channels for the ADS8588S.
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Design
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS8588S
SBAS642A–DECEMBER2016–REVISEDAPRIL2017
ADS8588S16-Bit,High-Speed,8-Channel,Simultaneous-SamplingADCwith
BipolarInputsonaSingleSupply
1
1Features
1
•16-BitADCwithIntegratedAnalogFront-End
•SimultaneousSampling:8-Channels
•Pin-ProgrammableBipolarInputs:±10Vand±5V
•HighInputImpedance:1MΩ
•5-VAnalogSupply:2.3-Vto5-VI/OSupply
•OvervoltageInputClampwith7-kVESD
•Low-Drift,On-ChipReference(2.5V)andBuffer
•ExcellentPerformance:
–200-kSPSMaxThroughputonAllChannels
–DNL:±0.35LSB;INL:±0.45LSB
–SNR:96.4dB;THD:−114dB
•OverTemperaturePerformance:
–MaxOffsetDrift:3ppm/°C
–GainDrift:6ppm/°C
•On-ChipDigitalFilterforOversampling
•FlexibleParallel,Byte,andSerialInterface
•TemperatureRange:–40°Cto+125°C
•Package:64-PinLQFP
2Applications
•MonitoringandControlforPowerGrids
•ProtectionRelays
•Multi-PhaseMotorControls
•IndustrialAutomationandControls
•MultichannelDataAcquisitionSystems
3Description
TheADS8588Sdeviceisan8-channel,integrated
dataacquisition(DAQ)systembasedona
simultaneous-sampling,16-bitsuccessive
approximation(SAR)analog-to-digitalconverter
(ADC)operatingatamaximumof200kSPSper
channel.Thedevicefeaturesacompleteanalog
front-endforeachchannel,includingaprogrammable
gainamplifier(PGA)withhighinputimpedanceof
1MΩ,inputclamp,low-passfilter,andanADCinput
driver.Thedevicealsofeaturesalow-drift,precision
referencewithabuffertodrivetheADC.Aflexible
digitalinterfacesupportingserial,parallel,andparallel
bytecommunicationenablesthedevicetobeused
withavarietyofhostcontrollers.
TheADS8588Scanbeconfiguredtoaccept±10-Vor
±5-Vtruebipolarinputsusingasingle5-Vsupply.
Thehighinputimpedanceallowsdirectconnection
withsensorsandtransformers,thuseliminatingthe
needforexternaldrivercircuits.Thehigh
performanceandaccuracy,alongwithzero-latency
conversionsofferedbythisdevice,alsomakethe
ADS8588Sagreatchoiceformanyindustrial
automationandcontrolapplications.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS8588SLQFP(64)10.00mm×10.00mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
SimplifiedBlockDiagram
2
ADS8588S
SBAS642A–DECEMBER2016–REVISEDAPRIL2017
www.ti.com
ProductFolderLinks:ADS8588S
SubmitDocumentationFeedbackCopyright©2016–2017,TexasInstrumentsIncorporated
TableofContents
1Features..................................................................1
2Applications...........................................................1
3Description.............................................................1
4RevisionHistory.....................................................2
5DeviceFamilyComparisonTable........................4
6PinConfigurationandFunctions.........................4
7Specifications.........................................................6
7.1AbsoluteMaximumRatings......................................6
7.2ESDRatings..............................................................7
7.3RecommendedOperatingConditions.......................7
7.4ThermalInformation..................................................7
7.5ElectricalCharacteristics...........................................8
7.6TimingRequirements:CONVSTControl................11
7.7TimingRequirements:DataReadOperation..........11
7.8TimingRequirements:ParallelDataReadOperation,
CSandRDTiedTogether.......................................11
7.9TimingRequirements:ParallelDataReadOperation,
CSandRDSeparate...............................................12
7.10TimingRequirements:SerialDataRead
Operation.................................................................12
7.11TimingRequirements:ByteModeDataRead
Operation.................................................................12
7.12TimingRequirements:OversamplingMode..........12
7.13TimingRequirements:ExitStandbyMode............12
7.14TimingRequirements:ExitShutdownMode.........13
7.15SwitchingCharacteristics:CONVSTControl........13
7.16SwitchingCharacteristics:ParallelDataRead
Operation,CSandRDTiedTogether.....................13
7.17SwitchingCharacteristics:ParallelDataRead
Operation,CSandRDSeparate.............................14
7.18SwitchingCharacteristics:SerialDataRead
Operation.................................................................14
7.19SwitchingCharacteristics:ByteModeDataRead
Operation.................................................................14
7.20TypicalCharacteristics..........................................18
8DetailedDescription............................................25
8.1Overview.................................................................25
8.2FunctionalBlockDiagram.......................................25
8.3FeatureDescription.................................................26
8.4DeviceFunctionalModes........................................34
9ApplicationandImplementation........................47
9.1ApplicationInformation............................................47
9.2TypicalApplication..................................................47
10PowerSupplyRecommendations.....................51
11Layout...................................................................52
11.1LayoutGuidelines.................................................52
11.2LayoutExample....................................................52
12DeviceandDocumentationSupport.................54
12.1DocumentationSupport........................................54
12.2ReceivingNotificationofDocumentationUpdates54
12.3CommunityResources..........................................54
12.4Trademarks...........................................................54
12.5ElectrostaticDischargeCaution............................54
12.6Glossary................................................................54
13Mechanical,Packaging,andOrderable
Information...........................................................54
4RevisionHistory
NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion.
ChangesfromOriginal(December2016)toRevisionAPage
•DeletedADS8586SandADS8584Sfromdocument.............................................................................................................1
•Changeddocumenttitle..........................................................................................................................................................1
•ChangedfirsttwosentencesofDescriptionsection..............................................................................................................1
•ChangedSimplifiedBlockDiagramfigure:changed2nd-orderto3rd-orderandRANGE/SDItoRANGEinfigure,
addedtitle...............................................................................................................................................................................1
•ChangedDeviceFamilyComparisonTabletocomparedevicefamilymembers..................................................................4
•ChangedAGNDtoDGNDinDVDDtoDGNDrowofAbsoluteMaximumRatingstable......................................................6
•Changedminimumspecificationfrom–96to–64inlastrowofexternalreferenceforE
G
parameter.................................8
•Changedx-axisofDCHistogramofCodes(±10V),DCHistogramofCodes(±5V),andDNLforAllCodescurves.......18
•Changedx-axisofINLvsAllCodes(±10V)andINLvsAllCodes(±5V)curves..............................................................19
•Changedsecond-ordertothird-orderinfirstparagraphofOverviewsection.....................................................................25
•Changed2nd-orderto3rd-orderandRANGE/SDItoRANGEinfunctionalblockdiagram.................................................25
•Changed2nd-orderto3rd-orderinFront-EndCircuitSchematicforEachAnalogInputChannelfigure............................26
•ChangedmultipletotwoinfirstsentenceofsecondparagraphofAnalogInputssection..................................................26
•ChangedsecondtothirdintitleanddescriptionofThird-Order,Low-PassFilter(LPF)section.........................................28
•AddedButterworthtoLPFdescriptioninThird-Order,Low-PassFilter(LPF)section.........................................................28
•ChangedsecondtothirdintitlesofThird-OrderLPFMagnitudeResponseandThird-OrderLPFPhaseResponse
figures...................................................................................................................................................................................28
3
ADS8588S
www.ti.com
SBAS642A–DECEMBER2016–REVISEDAPRIL2017
ProductFolderLinks:ADS8588S
SubmitDocumentationFeedbackCopyright©2016–2017,TexasInstrumentsIncorporated
RevisionHistory(continued)
•Changed16-BitADCTransferFunction(TwosComplementBinaryFormat)figureformoreaccuraterepresentation......33
•ChangedconversiontoconversionresultsinfirstsentenceofthirdparagraphinSerialDataReadsection.....................42
•Changedx-axisofcurvesDCHistogramforOSR2toDCHistogramforOSR64...............................................................45
•Changed2nd-orderto3rd-orderin8-ChannelDAQforPowerAutomationUsingtheADS8588Sfigure...........................47
•Changed2nd-orderto3rd-orderinInputRCLow-PassFilterfigure...................................................................................48
•DeletedPSRRAcrossFrequency(WithoutDecapacitor)figurefromPowerSupplyRecommendationssection...............51
•ChangedPSRRAcrossFrequency(WithDecapacitor)figure............................................................................................51
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8588S |
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