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LM94021

www.ti.com

SNIS138E–FEBRUARY2005–REVISEDJUNE2013

LM94021/LM94021QMulti-GainAnalogTemperatureSensor

CheckforSamples:LM94021

1

FEATURES

DESCRIPTION

TheLM94021isaprecisionanalogoutputCMOS

2

•LM94021QisAEC-Q100Grade0Qualifiedand

integrated-circuittemperaturesensorthatoperatesat

isManufacturedonanAutomotiveGradeFlow

asupplyvoltageaslowas1.5V.Whileoperatingover

•Low1.5VOperation

thewidetemperaturerangeof−50°Cto+150°C,the

•FourSelectableGains

LM94021deliversanoutputvoltagethatisinversely

proportionaltomeasuredtemperature.The

•VeryAccurateOverWideTemperatureRange

LM94021'slowsupplycurrentmakesitidealfor

of−50°Cto+150°C

battery-poweredsystemsaswellasgeneral

•LowQuiescentCurrent

temperaturesensingapplications.

•OutputisShort-CircuitProtected

Twologicinputs,GainSelect1(GS1)andGain

•ExtremelySmallSC70Package

Select0(GS0),selectthegainofthetemperature-to-

voltageoutputtransferfunction.Fourslopesare

•FootprintCompatiblewiththeIndustry-

selectable:−5.5mV/°C,−8.2mV/°C,−10.9mV/°C,

StandardLM20TemperatureSensor

and−13.6mV/°C.Inthelowestgainconfiguration

•ULRecognizedComponent

(GS1andGS0bothtiedlow),theLM94021can

operatewitha1.5Vsupplywhilemeasuring

APPLICATIONS

temperatureoverthefull−50°Cto+150°Coperating

range.Tyingbothinputshighcausesthetransfer

•CellPhones

functiontohavethelargestgainof−13.6mV/°Cfor

•WirelessTransceivers

maximumtemperaturesensitivity.Thegain-select

•BatteryManagement

inputscanbetieddirectlytoV

DD

orGroundwithout

anypull-uporpull-downresistors,reducing

•Automotive

componentcountandboardarea.Theseinputscan

•DiskDrives

alsobedrivenbylogicsignalsallowingthesystemto

•Games

optimizethegainduringoperationorsystem

•Appliances

diagnostics.

Table1.KEYSPECIFICATIONS

SupplyVoltage1.5Vto5.5V

SupplyCurrent9μA(typ)

20°Cto40°C±1.5°C

−50°Cto70°C±1.8°C

TemperatureAccuracy

−50°Cto90°C±2.1°C

−50°Cto150°C±2.7°C

OperatingTemperature–50°Cto150°C

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer