tsc2046

FEATURES
SAMEPINOUTASADS7846
2.2VTO5.25VOPERATION
1.5VTO5.25VDIGITALI/O
INTERNAL2.5VREFERENCE
DIRECTBATTERYMEASUREMENT(0VTO6V)
ON-CHIPTEMPERATUREMEASUREMENT
TOUCH-PRESSUREMEASUREMENT
QSPIANDSPI3-WIREINTERFACE
AUTOPOWER-DOWN
AVAILABLEINTSSOP-16,QFN-16,ANDVFBGA-48PACKAGESAPPLICATIONS
PERSONALDIGITALASSISTANTS
PORTABLEINSTRUMENTS
POINT-OF-SALETERMINALS
PAGERS
TOUCHSCREENMONITORS
CELLULARPHONESUSPatentNo.6246394QSPIandSPIareregisteredtrademarksofMotorola.DESCRIPTIONTheTSC2046isanext-generationversiontotheADS78464-wiretouchscreencontrollerwhichsupportsalow-voltageI/Ointerfacefrom1.5Vto5.25V.TheTSC2046is100%pin-compatiblewiththeexistingADS7846,andwilldropintothesamesocket.Thisallowsforeasyupgradeofcurrentapplicationstothenewversion.TheTSC2046alsohasanon-chip2.5Vreferencethatcanbeusedfortheauxiliaryinput,batterymonitor,andtemperaturemeasurementmodes.Thereferencecanalsobepowereddownwhennotusedtoconservepower.Theinternalreferenceoperatesdownto2.7Vsupplyvoltage,whilemonitoringthebatteryvoltagefrom0Vto6V.Thelow-powerconsumptionof0.75mWtypat2.7V(referenceoff),high-speed(upto125kHzsamplerate),andon-chipdriversmaketheTSC2046anidealchoiceforbattery-operatedsystemssuchaspersonaldigitalassistants(PDAs)withresistivetouchscreens,pagers,cellularphones,andotherportableequipment.TheTSC2046isavailableinTSSOP-16,QFN-16,andVFBGA-48packagesandisspecifiedoverthe–40°Cto+85°Ctemperaturerange.CDACInternal2.5VReferenceSARTSC2046Comparator6−ChannelMUXSerialDataIn/OutTemperatureSensorPenDetectBatteryMonitorDOUTBUSYCSDCLKDINVBATAUXVREF+VCCIOVDDX+X−Y+Y−PENIRQTSC2046SBAS265E−OCTOBER2002−REVISEDNOVEMBER2005LowVoltageI/OTOUCHSCREENCONTROLLER
 

!!2002−2005,TexasInstrumentsIncorporatedAlltrademarksarethepropertyoftheirrespectiveowners.Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.#$%&SBAS265E−OCTOBER2002−REVISEDNOVEMBER2005(1)+VCCandIOVDDtoGND−0.3Vto+6V.....................AnalogInputstoGND−0.3Vto+VCC+0.3V.................DigitalInputstoGND−0.3VtoIOVDD+0.3V.................PowerDissipation250mW.................................MaximumJunctionTemperature+150°C......................OperatingTemperatureRange−40°Cto+85°C................StorageTemperatureRange−65°Cto+150°C.................LeadTemperature(soldering,10s)+300°C.....................(1)Stressesabovetheseratingsmaycausepermanentdamage.Exposuretoabsolutemaximumconditionsforextendedperiodsmaydegradedevicereliability.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthosespecifiedisnotimplied.ELECTROSTATICDISCHARGESENSITIVITYThisintegratedcircuitcanbedamagedbyESD.TexasInstrumentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.PACKAGE/ORDERINGINFORMATION(1)PRODUCTNOMINALPENIRQPULLUPRESISTORVALUESMAXIMUMINTEGRALLINEARITYERROR(LSB)PACKAGE-LEADPACKAGEDESIGNATORSPECIFIEDTEMPERATURERANGEPACKAGEMARKINGORDERINGNUMBERTRANSPORTMEDIA,QUANTITYTSSOP-16PW−40°Cto+85°CTSC2046ITSC2046IPWRails,100TSSOP-16PW−40°Cto+85°CTSC2046ITSC2046IPWRTapeandReel,25004x4,1mmTSC2046IRGVTTapeandReel,250TSC2046I50kΩ±24x4,1mmQFN-16RGV−40°Cto+85°CTSC2046TSC2046IRGVRTapeandReel,2500TSC2046I50kΩ±2QFN-16RGV−40Cto+85CTSC2046TSC2046IRGVRG4TapeandReel,25004x4GQC−40°Cto+85°CAZ2046TSC2046IGQCRTapeandReel,25004x4VFBGA-48ZQC−40°Cto+85°CBC2046TSC2046IZQCTTapeandReel,250VFBGA-48ZQC−40°Cto+85°CBC2046TSC2046IZQCRTapeandReel,2500TSC2046I(2)90kΩ±24x4GQC−40°Cto+85°CAZ2046ATSC2046IGQCR-90TapeandReel,2500TSC2046I(2)90kΩ±24x4VFBGA-48ZQC−40°Cto+85°CBC2046ATSC2046IZQCR-90TapeandReel,2500(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumlocatedattheendofthisdatasheet,orseetheTIwebsiteat(2)High-impedanceversion.#$%&SBAS265E−OCTOBER2002−REVISEDNOVEMBER2005=+2.7Vto+5.5VAtTA=−40°Cto+85°C,+VCC=+2.7V,VREF=2.5Vinternalvoltage,fSAMPLE=125kHz,fCLK=16•fSAMPLE=2MHz,12-bitmode,digitalinputs=GNDorIOVDD,and+VCCmustbe•IOVDD,unlessotherwisenoted.TSC2046PARAMETERCONDITIONMINTYPMAXUNITSANALOGINPUTFull-ScaleInputSpanPositiveInput−NegativeInput0VREFVAbsoluteInputRangePositiveInput−0.2+VCC+0.2VNegativeInput−0.2+0.2VCapacitance25pFLeakageCurrent0.1µASYSTEMPERFORMANCEResolution12BitsNoMissingCodes11BitsIntegralLinearityError±2LSB(1)OffsetError±6LSBGainErrorExternalVREF±4LSBNoiseIncludingInternalVREF70µVrmsPower-SupplyRejection70dBSAMPLINGDYNAMICSConversionTime12CLKCyclesA