INA3221 Triple-Channel, High-Side Measurement, Shunt …

1 Power Supply (0 V to 26 V)Load 1 Load 2 Power Supply (0 V to 26 V)Load 3 Power Supply (0 V to 26 V) FVS (Supply Voltage)CH 1CH 2 VIN 1 VIN+1 VIN 2 VIN+2CH 3 VIN 3 VIN+3I2C-andSMBus-CompatibleInterfaceSDA SCLA0 CriticalWarningGNDADCS huntVoltages 1-3 Critical Limit Alerts 1-3 BusVoltages 1-3 Power Valid (PV)Timing Control (TC) Shunt Voltage Sum Alerts VSVPU10 k VPU10 k ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand MAY2012 REVISEDMARCH2016 INA3221 Triple-Channel, high -SideMeasurement,Shun tand Bus VoltageMonitorwith I2C- and SMBUS-CompatibleInterface11 Features1 SensesBus VoltagesFrom0 V to 26 V ReportsShuntand Bus Voltage HighAccuracy: OffsetVoltage.

2 80 V (max) (max) ConfigurableAveragingOptions FourProgrammableAddresses ProgrammableAlertand WarningOutputs Power- V to V2 Applications Computers PowerManagement TelecomEquipment BatteryChargers PowerSupplies TestEquipment3 DescriptionTheINA3221is a three- channel , high -sidecurrentand bus voltagemonitorwithan I2C- and ,inadditionto havingprogrammableconversiontimesand averagingmodesfor INA3221offersbothcriticalandwarningalert sto INA3221sensescurrenton busesthat can varyfrom0 V to 26 V. Thedeviceis ,and draws350 A (typ)of INA3221is specifiedovertheoperatingtemperaturerang eof 40 C to +125 and SMBUS-compatibleinterfacefeaturesfour (1)PARTNUMBERPACKAGEBODYSIZE(NOM) INA3221 VQFN(16) x (1) For all availablepackages,see the packageoptionaddendumat the end of the MAY2012 : INA3221 SubmitDocumentationFeedbackCopyright 2012 2016,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand Applicationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE.

3 Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (June2013)to RevisionBPage AddedDeviceInformationandESDR atingstables,andFeatureDescription,Devic eFunctionalModes,Applicationand Implementation,PowerSupplyRecommendation s,Layout,Deviceand DocumentationSupport, andMechanical,Packaging,and DeletedtracefromSDAto SCL,and addedmissingconnectordot to VSin Added(VIN+) + (VIN ) / 2 to common-modeanaloginputsin Changedall VSENSEto VSHUNT throughoutdatasheetfor Changed"Statusregister" to "Mask/Enableregister" to ChangedCriticalAlertsectiontext for Changedexternal"RPU" to "RPU_ext" in Figure20.

4 14 ChangedMultipleChannelMonitoringsectiont ext for AddedX and Y axis labelsto Changed"bidirectional" to "I/O" in secondparagraphofBus ChangedVS+to VS in Changedreferencesin Figure30 to pointto Changedvaluesin Table2,Bus Addeddatavalidtime to Table2,Bus Changedfall time to split dataand clocktimesin Table2,Bus Deletedrise time for datain Table2,Bus DeletedtracefromSDAto SCL,and addedmissingconnectordot to VSin Figure52 .. MAY2012 REVISEDMARCH2016 ProductFolderLinks: INA3221 SubmitDocumentationFeedbackCopyright 2012 2016,TexasInstrumentsIncorporatedChanges fromOriginal(May2012)to RevisionAPage ChangedsecondparagraphofSerialBus UpdatedFigure27 and note(1).

5 21 UpdatedFigure28 and note(1) ..21 UpdatedFigure29 and note(1) ..22 UpdatedFigure30 and note(1) ..22 Changedbit D15 in Changedbit D15 in 3IN+3 GNDVSIN+1IN 1 PVCritical12341211109 VPUIN+2IN 2TC16151413A0 SCLSDAW arning56784 INA3221 SBOS576B MAY2012 : INA3221 SubmitDocumentationFeedbackCopyright 2012 2016,TexasInstrumentsIncorporated5 DeviceComparisonTableDEVICEDESCRIPTIONIN A22636-V,Bidirectional,UltrahighAccuracy ,Low-or High-Side ,I2C Out, Currentand PowerMonitorWithAlertINA21926-V,Bidirect ional,Zero-Drift, High-Side ,I2C Out, Currentand PowerMonitorINA20926-V,Bidirectional,Low -or High-Side ,I2C Out, Currentand PowerMonitorand high -SpeedComparatorINA210, INA211, INA212,INA213, INA21426-V,Bidirectional,Zero-Drift, high -Accuracy,Low-or High-Side ,VoltageOut, CurrentShuntMonitor6 Pin Configurationand FunctionsRGVP ackage16-PinVQFNTop ViewPin Connectto GND,SCL,SDA,or VS.

6 Table1 showspin ; 111 AnaloginputConnectto load side of the channel1 voltageis the measurementfromthis pin to +112 AnaloginputConnectto supplyside of the channel1 214 AnaloginputConnectto load side of the channel2 voltageis the measurementfromthis pin to +215 AnaloginputConnectto supplyside of the channel2 31 AnaloginputConnectto load side of the channel3 voltageis the measurementfromthis pin to +32 AnaloginputConnectto supplyside of the channel3 ; clockline; dataline; open- ; bias , V to ; MAY2012 REVISEDMARCH2016 ProductFolderLinks: INA3221 SubmitDocumentationFeedbackCopyright 2012 2016,TexasInstrumentsIncorporated(1)Stre ssesbeyondthoselistedunderAbsoluteMaximu mRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions.

7 Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)VIN+and VIN can havea differentialvoltageof 26 V to +26 V; however,the voltageat thesepins mustnot exceedthe rangeof V to +26 (unlessotherwisenoted)(1)MINMAXUNITV oltageSupply,VS6 VAnaloginputsIN+, IN Differential(VIN+) (VIN )(2) 2626 VCommon-mode(VIN+) + (VIN ) / 2 ,warning,powervalid6 VTimingcontrol26 SerialbusDataline, SDA(GND )6 VClockline, SCL(GND )(VS+ )CurrentInput,into any pin5mAOpen-drain,digitaloutput10 TemperatureOperating,TA 40125 CJunction,TJ150 Storage,Tstg 65150(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.

8 (2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a (ESD)ElectrostaticdischargeHuman-bodymod el(HBM),per ANSI/ESDA/JEDECJS-001(1) 2500 VCharged-devicemodel(CDM),per JEDEC specificationJESD22-C101(2) 1000 Machinemodel (unlessotherwisenoted) ,TA 40125 C(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorand IC PackageThermalMetricsapplicationreport(S PRA953). (1) INA3221 UNITRGV(VQFN)16 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom) C/W6 INA3221 SBOS576B MAY2012 : INA3221 SubmitDocumentationFeedbackCopyright 2012 2016,TexasInstrumentsIncorporated(1)RTI = Referred-to-input.

9 (2)Inputleakageis positive(currentflowsinto the pin) for the conditionsshownat the top of this occurunderdifferentinputconditions.(3)SM Bustimeoutsin the INA3221resetthe interfacewheneverSCLis low for morethan28 TA= 25 C, VS= V, VIN+= 12 V, VSHUNT= (VIN+) (VIN ) = 0 mV, and VBUS= VIN = 12 V (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITINPUTVSHUNTS huntvoltageinput voltageinput026 VCMRC ommon-moderejectionVIN+= 0 V to +26 V110120dBVOSS huntoffsetvoltage,RTI(1) 40 80 VTA= 40 C to +125 V/ CPSRRvs powersupply,VS= V to V15 V/VVOSBus offsetvoltage,RTI(1) 8 16mVTA= 40 C to +125 C80 V/ CPSRRvs +Inputbias currentat IN+10 AIIN Inputbias currentat IN 10 || 670 A || k Inputleakage(2)(IN+ pin) + (IN pin)

10 , ADC ACCURACYADC nativeresolution13 Bits1-LSBstep sizeShuntvoltage40 VBus voltage8mVShuntvoltagegain 40 C to +125 C1050ppm/ CBus voltagegain 40 C to +125 C1050ppm/ CDNLD ifferentialnonlinearity bit = 000140154 sCT bit = 001204224CT bit = 010332365CT bit = 011588646CT bit = bit = bit = bit = (3)2835msDIGITALINPUT/OUTPUTCII nputcapacitance3pFLeakageinputcurrent0 V VIN (VS)6 VVILLow-levelinputvoltage (VS)VVOLLow-leveloutputvoltageSDA,critic al,warning,PVVS> + , IOL= 3 > + , IOL= Gain Error (%) 50 250255075100125150 Temperature ( C)Input Gain Error (m%)G007 3035404550 50 250255075100125150 Temperature ( C)Input Offset Voltage ( V)G004 115120125130 50 250255075100125150 Temperature ( C)Common Mode Rejection (dB)G005 160 120 80 4004080120200 Input Offset Voltage ( V)PopulationG003160 60 50 40 30 20 1001101001k10k100kFrequency (Hz)Gain (dB)G001 MAY2012 REVISEDMARCH2016 ProductFolderLinks: INA3221 SubmitDocumentationFeedbackCopyright 2012 2016, TA= 25 C, VS= V, VIN+= 12 V, VSHUNT= (VIN+) (VIN ) = 0 mV, and VBUS= VIN = 12 V (unlessotherwisenoted)Figure1.