CA3162_02中文资料

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1®April2002CA3162

A/DConvertersfor3-DigitDisplayFeatures•DualSlopeA/DConversion•MultiplexedBCDDisplay•UltraStableInternalBandGapVoltageReference•CapableofReading99mVBelowGroundwithSingleSupply•DifferentialInput•InternalTiming-NoExternalClockRequired•ChoiceofLowSpeed(4Hz)orHighSpeed(96Hz)ConversionRate•“Hold”InhibitsConversionbutMaintainsDelay•OverrangeIndication-“EEE”forReadingGreaterthan+999mV,“-”forReadingMoreNegativethan-99mVWhenUsedWithCA3161EDescriptionTheCA3162EandCA3162AEareI2LmonolithicA/Dconvertersthatprovidea3digitmultiplexedBCDoutput.TheyareusedwiththeCA3161EBCD-to-Seven-SegmentDecoder/Driverandaminimumofexternalpartstoimple-mentacomplete3-digitdisplay.TheCA3162AEisidenticaltotheCA3162Eexceptforanextendedoperatingtempera-turerange.

TheCA3161EisdescribedintheDisplayDriverssectionofthisdatabook.

OrderingInformation

PinoutCA3162(PDIP)TOPVIEW

PARTNUMBERTEMP.RANGE(oC)PACKAGEPKG.NO.

CA3162E0to7016LdPDIPE16.3

14151691312111012345

76

8

2120NSDMSDLSDHOLD/ZEROADJGND23V+GAINADJINTEGRATINGHIGHINPUTLOWINPUTZEROADJ22

CAPBYPASS

BCDOUTPUTSDIGITSELECTOUTPUTSBCDOUTPUTS

FN1080.3CAUTION:Thesedevicesaresensitivetoelectrostaticdischarge;followproperICHandlingProcedures.

1-888-INTERSILor321-724-7143|Intersil(anddesign)isaregisteredtrademarkofIntersilAmericasInc.Copyright©IntersilAmericasInc.2002.AllRightsReserved

元器件交易网www.cecb2b.comFunctionalBlockDiagramCONTROLLOGICCOUNTERSANDMULTIPLEXDIGIT

DRIVE

BANDGAPREFERENCE

REFERENCE

CURRENTGENERATOR

HOLD/BYPASSGATESOSC

÷2048÷

96

V/ICONVERTERTHRESHOLDDET.

MSD=MOSTSIGNIFICANTDIGITNSD=NEXTSIGNIFICANTDIGITLSD=LEASTSIGNIFICANTDIGIT

GAINADJ

GNDV+21202223HIGHINPUTLOWINPUTZEROADJV+V+BCDOUTPUTSINTEGRATINGCAP10118912121516143453456713

DIGITSELECT=MSD=LSD=NSD

CONVERSIONCONTROL

OUTPUTS†

CA3162元器件交易网www.cecb2b.comAbsoluteMaximumRatingsThermalInformationDCSupplyVoltage(BetweenPins7and14)...............+7VInputVoltage(Pin10or11toGround)...................±15VOperatingConditionsTemperatureRangeCA3162E.....................................0to75oCThermalResistance(Typical,Note1)θJA(oC/W)PDIPPackage.............................90MaximumJunctionTemperature.......................150oCMaximumStorageTemperatureRange..........-65oCto150oCMaximumLeadTemperature(Soldering10s).............300oC

CAUTION:Stressesabovethoselistedin“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thisisastressonlyratingandoperationofthedeviceattheseoranyotherconditionsabovethoseindicatedintheoperationalsectionsofthisspecificationisnotimplied.

NOTE:1.θJAismeasuredwiththecomponentmountedonaloweffectivethermalconductivitytestboardinfreeair.SeeTechBriefTB379for

details..

ElectricalSpecificationsTA=25oC,V+=5V,ZeroPotCentered,GainPot=2.4kΩ,UnlessOtherwiseSpecified

PARAMETERTESTCONDITIONSMINTYPMAXUNITSOperatingSupplyVoltageRange,V+4.555.5VSupplyCurrent,I+100kΩtoV+onPins3,4,5--17mAInputImpedance,ZI-100-MΩ

InputBiasCurrent,IIBPins10and11--80-nA

UnadjustedZeroOffsetV11-V10=0V,ReadDecodedOutput-12-+12mV

UnadjustedGainV11-V10=900mV,ReadDecodedOutput846-954mVLinearityNotes1and2-1-+1CountConversionRateSlowModePin6=OpenorGND-4-Hz

FastModePin6=5V-96-HzConversionControlVoltage(HoldMode)atPin60.81.21.6V

CommonModeInputVoltageRange,VICRNotes3,4-0.2-+0.2V

BCDSinkCurrentatPins1,2,15,16VBCD

≥0.5V,atLogicZeroState0.41.6-mA

DigitSelectSinkCurrentatPins3,4,5VDIGITSelect=4VatLogicZeroState1.62.5-mA

ZeroTemperatureCoefficientVI=0V,ZeroPotCentered-10-µV/oVGainTemperatureCoefficientVI=900mV,GainPot=2.4kΩ-0.005-%/oCNOTES:1.Apply0VacrossV11toV10.Adjustzeropotentiometertogive000mVreading.Apply900mVtoinputandadjustgainpotentiometerto

give900mVreading.

2.Linearityismeasuredasadifferencefromastraightlinedrawnthroughzeroandpositivefullscale.Limitsdonotinclude±0.5countbitdigitizingerror.

3.Forapplicationswherelowinputpin10isnotoperatedatpin7potential,areturnpathofnotmorethan100kΩresistancemustbeprovidedforinputbiascurrents.

4.Thecommonmodeinputvoltageabovegroundcannotexceed+0.2Vifthefullinputsignalrangeof999mVisrequiredatpin11.Thatis,pin11maynotoperatehigherthan1.2Vpositivewithrespecttogroundor0.2Vnegativewithrespecttoground.Ifthemaximuminputsignalislessthan999mV,thecommonmodeinputvoltagemayberaisedaccordingly.

CA3162元器件交易网www.cecb2b.com