Texas Instruments ADS1219 Handleiding
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Reference
MUX
AIN0
AIN1
AIN2
AIN3
AVDD
AGND
DGND
REFPREFN
2.048-V
Reference
DVDD
Digital Filter
and
I
2
C Interface
Low Drift
Oscillator
ADS1219
SDA
SCL
A1
A0
RESET
DRDY
3.3 V
0.1 PF
3.3 V
0.1 PF
C
F3
R
F3
0 V to 2 V
R
Shunt
C
F2
R
F2
Load
3.3 V
+
-
R
REF
ThermistorC
F0
R
F0
3.3 V
0.1 PF
3.3 V
3.3 V
INA180
0.1 PF
24-bit
ûADC
Gain
1 or 4
Buffers
MUX
Product
Folder
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Reference
Design
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS1219
SBAS924A–JULY2018–REVISEDNOVEMBER2018
ADS12194-Channel,1-kSPS,24-Bit,Delta-SigmaADCWithI
2
CInterface
1
1Features
1
•EasytoUseWithOnlyOneRegistertoProgram
•CurrentConsumptionasLowas315µA(typ)
•WideSupplyRange:2.3Vto5.5V
•Rail-to-RailInputBufferstoAchieveHighInput
Impedance
•ProgrammableGains:1and4
•ProgrammableDataRates:Upto1kSPS
•Upto20BitsEffectiveResolution
•Simultaneous50-Hzand60-HzRejectionat
20SPSWithSingle-CycleSettlingDigitalFilter
•TwoDifferentialorFourSingle-EndedInputs
•Internal2.048-VReference:5ppm/°C(typ)Drift
•Internal2%AccurateOscillator
•I
2
C-CompatibleInterface
•SupportedI
2
CBusSpeedModes:
Standard-Mode,Fast-Mode,Fast-ModePlus
•16Pin-ConfigurableI
2
CAddresses
•Package:3.0-mm×3.0-mm×0.75-mmWQFN
2Applications
•BatteryTestEquipment
•GasDetectors
•HeatMeters
•OpticalModules
•WearableFitnessandActivityTrackers
3Description
TheADS1219isaprecision,24-bit,analog-to-digital
converter(ADC)thatincludesallfeaturesnecessary
toimplementthemostcommonsystemmonitoring
functions,suchassupplyvoltage,current,and
temperaturemonitoring.Thedevicefeaturestwo
differentialorfoursingle-endedinputsthrougha
flexibleinputmultiplexer(MUX),rail-to-railinput
buffers,aprogrammablegainstage,avoltage
reference,andanoscillator.
Thedeviceincludesbuffersthatallowhigh-
impedancesourcestobedirectlyconnectedtothe
device.Againstagefollowsthebufferswhich
providesselectablegainsof1and4.TheADS1219
canperformconversionsatdataratesashighas
1000samplespersecond(SPS)withsingle-cycle
settling.At20SPS,thedigitalfilteroffers
simultaneous50-Hzand60-Hzrejectionfornoisy
industrialapplications.
TheADS1219featuresa2-wire,I
2
C-compatible
interfacethatsupportsI
2
Cbusspeedsupto1Mbps.
16differentI
2
Caddressescanbeselectedforthe
deviceviatwoaddresspins.
TheADS1219isofferedinaleadless16-pinWQFN
ora16-pinTSSOPpackageandisspecifiedovera
temperaturerangeof–40°Cto+125°C.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS1219
WQFN(16)3.00mm×3.00mm
TSSOP(16)5.00mm×4.40mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
Voltage,Current,andTemperatureMonitoringApplication
2
ADS1219
SBAS924A–JULY2018–REVISEDNOVEMBER2018
www.ti.com
ProductFolderLinks:ADS1219
SubmitDocumentationFeedbackCopyright©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..................................................5
6.5ElectricalCharacteristics...........................................5
6.6I
2
CTimingRequirements..........................................7
6.7I
2
CSwitchingCharacteristics....................................8
6.8TypicalCharacteristics............................................10
7ParameterMeasurementInformation................14
7.1NoisePerformance.................................................14
8DetailedDescription............................................15
8.1Overview.................................................................15
8.2FunctionalBlockDiagram.......................................15
8.3FeatureDescription.................................................16
8.4DeviceFunctionalModes........................................20
8.5Programming...........................................................22
8.6RegisterMap...........................................................27
9ApplicationandImplementation........................30
9.1ApplicationInformation............................................30
9.2TypicalApplication..................................................34
10PowerSupplyRecommendations.....................37
10.1Power-SupplySequencing....................................37
10.2Power-SupplyDecoupling.....................................37
11Layout...................................................................38
11.1LayoutGuidelines.................................................38
11.2LayoutExample....................................................39
12DeviceandDocumentationSupport.................40
12.1DeviceSupport......................................................40
12.2DocumentationSupport........................................40
12.3ReceivingNotificationofDocumentationUpdates40
12.4CommunityResources..........................................40
12.5Trademarks...........................................................40
12.6ElectrostaticDischargeCaution............................40
12.7Glossary................................................................40
13Mechanical,Packaging,andOrderable
Information...........................................................40
4RevisionHistory
NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion.
ChangesfromOriginal(July2018)toRevisionAPage
•ChangedInternalVoltageReference,Accuracyparameter:addedTSSOPpackagetotestconditionsoffirstrow
andaddedsecondrowtoInternalVoltageReference,Accuracyparameter.........................................................................5
•AddedTSSOPpackagetoconditionsofInternalReferenceVoltageHistogramfigure......................................................11
•Changed976.56nVto61.04nVinLSBSIZEcolumnofFull-ScaleRangeandLSBSizetable........................................17
16A15AIN2
1RESET12 DRDY
15A06REFN
2DGND11 DVDD
14SCL7REFP
3AGND10 AVDD
13SDA8AIN1
4AIN39 AIN0
Not to scale
Thermal
Pad
1A016 SCL
2A115 SDA
3RESET14 DRDY
4DGND13 DVDD
5AGND12 AVDD
6AIN311 AIN0
7AIN210 AIN1
8REFN9 REFP
Not to scale
3
ADS1219
www.ti.com
SBAS924A–JULY2018–REVISEDNOVEMBER2018
ProductFolderLinks:ADS1219
SubmitDocumentationFeedbackCopyright©2018,TexasInstrumentsIncorporated
5PinConfigurationandFunctions
RTEPackage
16-PinWQFN
TopView
PWPackage
16-PinTSSOP
TopView
(1)SeetheUnusedInputsandOutputssectionfordetailsonhowtoconnectunusedpins.
PinFunctions
PIN
ANALOGORDIGITAL
INPUT/OUTPUTDESCRIPTION
(1)
NAME
NO.
RTEPW
A0151Digitalinput
I
2
Cslaveaddressselectpin0.SeetheI2CAddresssectionfordetails.
A1162Digitalinput
I
2
Cslaveaddressselectpin1.SeetheI2CAddresssectionfordetails.
AIN0911AnaloginputAnaloginput0
AIN1810AnaloginputAnaloginput1
AIN257AnaloginputAnaloginput2
AIN346AnaloginputAnaloginput3
AGND35AnalogsupplyNegativeanalogpowersupply
AVDD1012AnalogsupplyPositiveanalogpowersupply.Connecta100-nF(orlarger)capacitortoAGND.
DGND24DigitalsupplyDigitalground
DRDY1214DigitaloutputDataready,activelow.ConnecttoDVDDusingapullupresistor.
DVDD1113DigitalsupplyPositivedigitalpowersupply.Connecta100-nF(orlarger)capacitortoDGND.
REFN68AnaloginputNegativereferenceinput
REFP79AnaloginputPositivereferenceinput
RESET13DigitalinputReset,activelow
SCL1416DigitalinputSerialclockinput.ConnecttoDVDDusingapullupresistor.
SDA1315Digitalinput/outputSerialdatainputandoutput.ConnecttoDVDDusingapullupresistor.
ThermalpadPad——Thermalpowerpad.ConnecttoAGND.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS1219 |
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