Texas Instruments LMT01 Bedienungsanleitung

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MCU/

FPGA/

ASIC

V

DD

: 3.0V to 5.5V

GPIO

GPIO/

COMP

LMT01

VP

VN

Up to 2m

Min 2.0V

LMT01 Pulse Count Interface

Power Off

Conversion Time

ADC Conversion Result

Power On

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

±50 ±25

0255075100125150

Temperature Accuracy (ƒC)

LMT01 Junction Temperaure (ƒC)

C014

Max Limit

Min Limit

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LMT01

SNIS189D–JUNE2015–REVISEDJUNE2018

LMT010.5°CAccurate2-PinDigitalOutputTemperatureSensorWithPulseCount

Interface

1

1Features

1

•HighAccuracyOver–50°Cto150°CWide

TemperatureRange

––20°Cto90°C:±0.5°C(Maximum)

–90°Cto150°C:±0.625°C(Maximum)

––50°Cto–20°C:±0.7°C(Maximum)

•PrecisionDigitalTemperatureMeasurement

Simplifiedina2-PinPackage

•PulseCountCurrentLoopEasilyReadby

Processor.NumberofOutputPulsesis

ProportionaltoTemperatureWith0.0625°C

Resolution

•CommunicationFrequency:88kHz

•ConversionCurrent:34µA

•ContinuousConversionPlusData-Transmission

Period:100ms

•Floating2-Vto5.5-V(VP–VN)SupplyOperation

WithIntegratedEMIImmunity

•Multiple2-PinPackageOfferings:TO-92/LPG(3.1

mm×4mm×1.5mm)–½theSizeofTraditional

TO-92andWSONWithWettableFlanks

2Applications

•DigitalOutputWiredProbes

•WhiteGoods

•HVAC

•PowerSupplies

•BatteryManagement

LMT01Accuracy

Typicalunitsplottedincenterofcurve.

3Description

TheLMT01deviceisahigh-accuracy,2-pin

temperaturesensorwithaneasy-to-usepulsecount

currentloopinterface,whichmakesitsuitablefor

onboardandoffboardapplicationsinautomotive,

industrial,andconsumermarkets.TheLMT01digital

pulsecountoutputandhighaccuracyoverawide

temperaturerangeallowpairingwithanyMCU

withoutconcernforintegratedADCqualityor

availability,whileminimizingsoftwareoverhead.TI’s

LMT01deviceachievesamaximum±0.5°Caccuracy

withveryfineresolution(0.0625°C)overa

temperaturerangeof–20°Cto90°Cwithoutsystem

calibrationorhardwareandsoftwarecompensation.

TheLMT01’spulsecountinterfaceisdesignedto

directlyinterfacewithaGPIOorcomparatorinput,

therebysimplifyinghardwareimplementation.

Similarly,theLMT01'sintegratedEMIsuppression

andsimple2-pinarchitecturemakesitsuitablefor

onboardandoffboardtemperaturesensinginanoisy

environment.TheLMT01devicecanbeeasily

convertedintoatwo-wiretemperatureprobewitha

wirelengthuptotwometers.SeeLMT01-Q1forthe

automotivequalifiedversion.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMT01LPGTO-92(2)4.00mm×3.15mm

LMT01DQXWSON(2)1.70mm×2.50mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

2-PinICTemperatureSensor

Produktspezifikationen