TC1047/TC1047A Precision Temperature-to-Voltage Converter Features GeneralDescription • SupplyVoltageRange: The TC1047 and TC1047A are linear voltage output - TC1047:2.7Vto4.4V temperature sensors whose output voltage is directly proportional to the measured temperature. The - TC1047A:2.5Vto5.5V TC1047 and TC1047A can accurately measure (cid:127) WideTemperatureMeasurementRange: temperature from-40°C to+125°C. Withthe TC1047, -40oCto+125oC the supply voltage can vary between 2.7V and 4.4V. (cid:127) HighTemperatureConverterAccuracy: Thepower supplyrangeof theTC1047Aisfrom2.5V ±2oC,Max,at25°C to5.5V. (cid:127) LinearTemperatureSlope10mV/°C(typ.) Theoutputvoltagerangeforthesedevicesistypically (cid:127) Availablein3-PinSOT-23BPackage 100mVat-40°C,500mVat0°C,750mVat+25°C,and (cid:127) VeryLowSupplyCurrent: 1.75V at +125°C. A 10mV/°C voltage slope output - 35µATypical response allows for a predictable temperature measurement over a wide temperature range. The Applications TC1047andTC1047Aarepackagedin3-PinSOT-23B packages, making them ideal for space critical (cid:127) CellularPhones applications. (cid:127) PowerSupplyThermalShutdown (cid:127) TemperatureControlledFans BlockDiagram (cid:127) TemperatureMeasurement/Instrumentation V =2.5Vto5.5V (cid:127) TemperatureRegulators DD PICmicro® (cid:127) ConsumerElectronics Microcontroller (cid:127) PortableBatteryPoweredEquipment V DD DeviceSelectionTable A/D TC1047A PartNumber Package Temp.Range Converter TC1047VNB 3-PinSOT-23B -40°Cto+125°C V SS TC1047AVNB 3-PinSOT-23B -40°Cto+125°C PackageType 3-Pin SOT-23B* V SS 3 TC1047 TC1047A 1 2 V V DD OUT Note:*3-PinSOT-23BisequivalenttoJEDECTO-236  2002MicrochipTechnologyInc. DS21498B-page 1

TC1047/TC1047A 1.0 ELECTRICAL *Stressesabovethoselistedunder"AbsoluteMaximumRat- ings"maycausepermanentdamagetothedevice.Theseare CHARACTERISTICS stressratings only and functional operation of the device at these or any other conditions above those indicated in the AbsoluteMaximum Ratings* operationsectionsofthespecificationsisnotimplied.Expo- sure to Absolute Maximum Rating conditions for extended SupplyVoltage ......................................................+7V periodsmayaffectdevicereliability. VoltageonAnyPinwithRespecttoSupplies ..................................................V -0.3toV +0.3V SS DD OperatingTemperature......................-40°Cto+125°C StorageTemperatureRange..............-55°Cto+150°C TC1047/1047AELECTRICALSPECIFICATIONS ElectricalCharacteristics:Unlessotherwisespecified,thesespecificationsapplyfortheentiresupplyvoltagerangeandfor T =-40°Cto+125°C A Symbol Parameter Min Typ Max Units TestConditions V SupplyVoltage 2.7 — 4.4 V TC1047 DD 2.5 — 5.5 TC1047A I SupplyCurrent,Operating — 35 60 µA Q A AverageSlopeofOutputVoltage — 10 — mV/°C V TMP TemperatureAccuracy -2 ±0.5 +2 °C T =25°C ACY A -3 ±0.5 +3 °C T =+125°C A — 1.0 — °C T =-40°C A V OutputVoltage — 100 — mV T =-40°C OUT A 730 750 770 mV T =25°C A 1720 1750 1780 mV T =+125°C A I OutputSourceandSinkCurrent 100 — — µA OUT  DS21498B-page 2 2002MicrochipTechnologyInc.

TC1047/TC1047A 2.0 PIN DESCRIPTIONS ThedescriptionsofthepinsarelistedinTable2-1. TABLE2-1: PINFUNCTIONTABLE PinNo. Symbol Description (3-PinSOT-23B) 1 V InputSupplyVoltage DD 2 V TemperatureSensorOutputTerminal OUT 3 V GroundTerminal SS  2002MicrochipTechnologyInc. DS21498B-page 3

TC1047/TC1047A 3.0 DETAILED DESCRIPTION TheTC1047andTC1047Ahaveanoutputvoltagethat varies linearly with temperature in degrees Celsius. Figure3-1 shows a plot of the output voltage versus temperature for the TC1047 and TC1047A. The temperatureslopeisfixedat10mV/°C,andtheoutput voltageat0°Cis500mV. FIGURE3-1: OUTPUTVOLTAGEVS.TEMPERATURE VOUT = (10mV/˚C) CTemperature ˚C) + 500mV 1.75 1.7 1.5 1.3 s) olt 1.1 V ( T 0.9 U O V 0.7 0.5 0.3 0.1 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110120 125 TEMPERATURE (°C)  DS21498B-page 4 2002MicrochipTechnologyInc.

TC1047/TC1047A 4.0 TYPICAL CHARACTERISTICS Note: The graphs provided following thisnoteareastatistical summarybasedonalimitednumber ofsamples and are provided for informational purposes only. The performance characteristics listed herein are not testedorguaranteed. Insomegraphs, thedatapresentedmaybeoutsidethespecifiedoperatingrange (e.g.,outsidespecifiedpowersupplyrange)andthereforeoutsidethewarrantedrange. FIGURE4-1: TEMPERATUREACCURACYVS.TEMPERATURE 3 2 1 C) Y (˚ VDD = 2.5V CC 0 A P EM -1 VDD = 5.5V T -2 -3 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) FIGURE4-2: SUPPLYCURRENTVS.TEMPERATURE 50 VDD = 5.5V 40 VDD = 2.5V 30 A) µ (D D I 20 10 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C)  2002MicrochipTechnologyInc. DS21498B-page 5

TC1047/TC1047A 5.0 PACKAGE INFORMATION 5.1 PackageMarkingInformation 3-PinSOT-23B (cid:1)(cid:2)(cid:3)(cid:4) 1&2=partnumbercode+temperaturerangeand voltage PartNumber Code TCM1047 AL TCM1047A BL 3=yearandquartercode 4=lotIDnumber  DS21498B-page 6 2002MicrochipTechnologyInc.

TC1047/TC1047A 5.2 TapingForm Component Taping Orientation for 3-Pin SOT-23B (JEDEC TO-236) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation For TR Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 3-Pin SOT-23B 8 mm 4 mm 3000 7 in 5.3 PackageDimensions 3-Pin SOT-23B .021 (0.54) .015 (0.37) .104 (2.64) .055 (1.40) .083 (2.10) .047 (1.20) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .040 (1.02) 8° MAX. ..000073 ((00..1088)) .031 (0.79) .010 (0.25) .004 (0.10) .081 (2.05) .005 (0.13) .001 (0.02) .070 (1.78) Dimensions: inches (mm)  2002MicrochipTechnologyInc. DS21498B-page 7

TC1047/TC1047A NOTES:  DS21498B-page 8 2002MicrochipTechnologyInc.

TC1047/TC1047A PRODUCT IDENTIFICATION SYSTEM Toorderorobtaininformation,e.g.,onpricingordelivery,refertothefactoryorthelistedsalesoffice. PARTNO. X Examples: Device Temperature a) DSTEMPVNBTR: High Precision Temp-to- Range VoltageConverter Device: DSTEMP: HighPrecisionTemp-to-VoltageConverter DSTEMPxTR: HighPrecisionTemp-to-VoltageConverter (TapeandReel) TemperatureRange: V= -40°Cto+125°C Package: NB = 3-pinSOT-23B SALES AND SUPPORT DataSheets ProductssupportedbyapreliminaryDataSheetmayhaveanerratasheetdescribingminoroperationaldifferencesandrecom- mendedworkarounds.Todetermineifanerratasheetexistsforaparticulardevice,pleasecontactoneofthefollowing: 1. YourlocalMicrochipsalesoffice 2. TheMicrochipCorporateLiteratureCenterU.S.FAX:(480)792-7277 3. TheMicrochipWorldwideSite(www.microchip.com) Pleasespecifywhichdevice,revisionofsiliconandDataSheet(includeLiterature#)youareusing. NewCustomerNotificationSystem Registeronourwebsite(www.microchip.com/cn)toreceivethemostcurrentinformationonourproducts.  2002MicrochipTechnologyInc. DS21498B-page 9

TC1047/TC1047A NOTES:  DS21498B-page 10 2002MicrochipTechnologyInc.

TC1047/TC1047A Information contained in this publication regarding device Trademarks applicationsandthelikeisintendedthroughsuggestiononly andmaybesupersededbyupdates.Itisyourresponsibilityto The Microchip name and logo, the Microchip logo, FilterLab, ensure that your application meets with your specifications. KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, No representation or warranty is given and no liability is PICSTART,PROMATE, SEEVAL and TheEmbedded Control assumedbyMicrochipTechnologyIncorporatedwithrespect SolutionsCompanyareregisteredtrademarksofMicrochipTech- totheaccuracyoruseofsuchinformation,orinfringementof nologyIncorporatedintheU.S.A.andothercountries. patentsorotherintellectualpropertyrightsarisingfromsuch dsPIC,ECONOMONITOR,FanSense,FlexROM,fuzzyLAB, useorotherwise.UseofMicrochip’sproductsascriticalcom- In-Circuit Serial Programming, ICSP, ICEPIC, microPort, ponentsinlifesupportsystemsisnotauthorizedexceptwith Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, expresswritten approvalbyMicrochip.Nolicensesarecon- MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode veyed,implicitlyorotherwise,underanyintellectualproperty andTotalEndurancearetrademarksofMicrochipTechnology rights. IncorporatedintheU.S.A. SerializedQuickTurnProgramming(SQTP)isaservicemark ofMicrochipTechnologyIncorporatedintheU.S.A. All other trademarks mentioned herein are property of their respectivecompanies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A.,AllRightsReserved. Printedonrecycledpaper. MicrochipreceivedQS-9000qualitysystem certificationforitsworldwideheadquarters, designandwaferfabricationfacilitiesin ChandlerandTempe,ArizonainJuly1999 andMountainView,CaliforniainMarch2002. TheCompany’squalitysystemprocessesand proceduresareQS-9000compliantforits PICmicro®8-bitMCUs,KEELOQ®codehopping devices,SerialEEPROMs,microperipherals, non-volatilememoryandanalogproducts.In addition,Microchip’squalitysystemforthe designandmanufactureofdevelopment systemsisISO9001certified.  2002MicrochipTechnologyInc. DS21498B-page11

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