Texas Instruments ADS7850 Handleiding
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AINP
AINM
AINM
AINP
ADS7250,
ADS7850,
ADS8350
V
REF
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Folder
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS8350
,
ADS7850
,
ADS7250
SBAS580D–MAY2013–REVISEDMARCH2018
ADSxx50Dual,750-kSPS,16-,14-,and12-Bit,Simultaneous-Sampling,
Analog-to-DigitalConverters
1
1Features
1
•16-,14-,and12-BitPin-CompatibleFamily
•SimultaneouslySamplesTwoChannels
•Pseudo-DifferentialAnalogInputs
•FastThroughput:750kSPS
•ExcellentDCPerformance:
–Linearity:
–ADS8350:
16-BitNMCDNL,±2.5LSB,MaxINL
–ADS7850:
14-BitNMCDNL,±1.5LSB,MaxINL
–ADS7250:
12-BitNMCDNL,±1LSB,MaxINL
•ExcellentACPerformance:
–ADS8350:85-dBSNR,–96-dBTHD
–ADS7850:81-dBSNR,–90-dBTHD
–ADS7250:73-dBSNR,–88-dBTHD
•SimpleSerialInterface
•Fully-SpecifiedOverExtendedIndustrial
TemperatureRange:–40°Cto125°C
•SmallFootprint:WQFN-16(3mm×3mm)
2Applications
•MotorControl:
PositionMeasurementUsingSinCosEncoders
•OpticalNetworking:
EDFAGainControlLoop
•ProtectionRelays
•PowerQualityMeasurement
•Three-PhasePowerControls
•ProgrammableLogicControllers
•IndustrialAutomation
3Description
TheADS8350,ADS7850,andADS7250devices
belongtoafamilyofpin-compatible,dual,high-
speed,simultaneous-sampling,analog-to-digital
converters(ADCs)thatsupportpseudo-differential
analoginputs.Alldevicessupportasimpleserial
interfacethatcanoperateoverawidepower-supply
range,enablingeasycommunicationwithalarge
varietyofhostcontrollers.
Alldevicesarefullyspecifiedovertheextended
industrialtemperaturerange(–40°Cto125°C)and
areavailableinapin-compatible,WQFN-16(3mm×
3mm)package.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS7250
WQFN(16)3.00mm×3.00mmADS7850
ADS8350
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
FunctionalBlockDiagram
2
ADS8350
,
ADS7850
,
ADS7250
SBAS580D–MAY2013–REVISEDMARCH2018
www.ti.com
ProductFolderLinks:ADS8350ADS7850ADS7250
SubmitDocumentationFeedbackCopyright©2013–2018,TexasInstrumentsIncorporated
TableofContents
1Features..................................................................1
2Applications...........................................................1
3Description.............................................................1
4RevisionHistory.....................................................2
5PinConfigurationandFunctions.........................3
6Specifications.........................................................4
6.1AbsoluteMaximumRatings......................................4
6.2ESDRatings..............................................................4
6.3RecommendedOperatingConditions.......................4
6.4ThermalInformation..................................................4
6.5ElectricalCharacteristics:AllDevices.......................5
6.6ElectricalCharacteristics:ADS7250.........................6
6.7ElectricalCharacteristics:ADS7850.........................7
6.8ElectricalCharacteristics:ADS8350.........................8
6.9TimingRequirements................................................9
6.10SwitchingCharacteristics........................................9
6.11TypicalCharacteristics:ADS7250........................10
6.12TypicalCharacteristics:ADS7850........................13
6.13TypicalCharacteristics:ADS8350........................16
6.14TypicalCharacteristics:AllDevices......................19
7DetailedDescription............................................20
7.1Overview.................................................................20
7.2FunctionalBlockDiagram.......................................20
7.3FeatureDescription.................................................21
7.4DeviceFunctionalModes........................................24
8ApplicationandImplementation........................26
8.1ApplicationInformation............................................26
8.2TypicalApplications................................................26
9PowerSupplyRecommendations......................33
10Layout...................................................................34
10.1LayoutGuidelines.................................................34
10.2LayoutExample....................................................34
11DeviceandDocumentationSupport.................35
11.1DocumentationSupport........................................35
11.2RelatedLinks........................................................35
11.3ReceivingNotificationofDocumentationUpdates35
11.4CommunityResources..........................................35
11.5Trademarks...........................................................35
11.6ElectrostaticDischargeCaution............................35
11.7Glossary................................................................35
12Mechanical,Packaging,andOrderable
Information...........................................................36
4RevisionHistory
NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion.
ChangesfromRevisionC(June2014)toRevisionDPage
•ChangedESDRatingstitle,updatedtocurrentformat,movedStoragetemperatureparametertoAbsolute
MaximumRatingstable..........................................................................................................................................................4
•ChangedTimingCharacteristicstable:splittableintoTimingRequirementsandSwitchingCharacteristics.......................9
•Deletedt
SU_DOCK
andt
HT_CKDO
parameters,replacedwitht
D_CKDO
parameter........................................................................9
•ChangedTimingDiagramfigure.............................................................................................................................................9
ChangesfromRevisionB(April2014)toRevisionCPage
•ChangedDeviceInformationtabletocurrentstandards.......................................................................................................1
•Correctedpseudo-differentialinputandreferenceconnectionsinthefunctionalblockdiagram...........................................1
•ChangedHandlingRatingstabletocurrentstandards.........................................................................................................4
ChangesfromRevisionA(January2014)toRevisionBPage
•Changedformattomeetlatestdatasheetstandards;addedLayoutsection,movedexistingsections...............................1
•DeletedOrderingInformationsection....................................................................................................................................3
ChangesfromOriginal(May2013)toRevisionAPage
•Releasedtoproduction...........................................................................................................................................................1
REFIN-A
REFGND-A
REFGND-B
REFIN-B
SDO-B
SDO-A
SCLK
CS
1
2
3
4
12
11
10
9
AINM-A16AINM-B5
15
14
13
6
7
8
AINP-AAINP-B
AVDDDVDD
GNDGND
Thermal
Pad
3
ADS8350
,
ADS7850
,
ADS7250
www.ti.com
SBAS580D–MAY2013–REVISEDMARCH2018
ProductFolderLinks:ADS8350ADS7850ADS7250
SubmitDocumentationFeedbackCopyright©2013–2018,TexasInstrumentsIncorporated
5PinConfigurationandFunctions
RTEPackage
16-PinWQFN
TopView
PinFunctions
PIN
I/ODESCRIPTIONNAMENO.
AINM-A16AnaloginputNegativeanaloginput,ADC_A
AINM-B5AnaloginputNegativeanaloginput,ADC_B
AINP-A15AnaloginputPositiveanaloginput,ADC_A
AINP-B6AnaloginputPositiveanaloginput,ADC_B
AVDD14SupplyADCsupplyvoltage
CS9DigitalinputChip-selectsignal;activelow
DVDD7SupplyDigitalI/Osupply
GND8,13SupplyDeviceground
REFGND-A2SupplyReferencegroundpotential,ADC_A
REFGND-B3SupplyReferencegroundpotential,ADC_B
REFIN-A1AnaloginputReferencevoltageinput,ADC_A
REFIN-B4AnaloginputReferencevoltageinput,ADC_B
SCLK10DigitalinputSerialcommunicationclock
SDO-A11DigitaloutputDataoutputforserialcommunication,ADC_A
SDO-B12DigitaloutputDataoutputforserialcommunication,ADC_B
ThermalpadSupply
Exposedthermalpad.TIrecommendsconnectingthethermalpadtotheprinted
circuitboard(PCB)ground.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS7850 |
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