Texas Instruments LMT70A Handleiding

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LMT70

MSP430

TAO

GPIO2

P2.3

ADC

(12-bit)

M

U

X

GPIO1

2.2V to 3.6V

Coin Cell

Battery

T_ON

VDD

P2.5_VREF

1.5V

Vref

-0.60

-0.50

-0.40

-0.30

-0.20

-0.10

0.00

0.10

0.20

0.30

0.40

0.50

0.60

±60 ±40 ±20

020406080100120140160

Accuracy (C)

DUT Temperature (C)

C001

Max Limit

Min Limit

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMT70

,

LMT70A

SNIS187A–MARCH2015–REVISEDJULY2015

LMT70,LMT70A±0.05°CPrecisionAnalogTemperatureSensor,RTDandPrecisionNTC

ThermistorIC

1Features3Description

TheLMT70isanultra-small,high-precision,low-

1

•Accuracy:

powerCMOSanalogtemperaturesensorwithan

–±0.05°C(typ)or±0.13°C(max)from20°Cto

outputenablepin.ApplicationsfortheLMT70include

42°C

virtuallyanytypeoftemperaturesensingwherecost-

–±0.2°C(max)from-20°Cto90°C

effective,highprecisionandlow-powerarerequired,

suchasInternetofThings(IoT)sensornodes,

–±0.23°C(max)from90°Cto110°C

medicalthermometers,high-precisioninstrumentation

–±0.36°C(max)from-55°Cto150°C

andbatterypowereddevices.TheLMT70isalsoa

•WideTemperatureRange:−55°Cto150°C

greatreplacementforRTDandprecisionNTC/PTC

thermistors.

•MatchingofTwoAdjacentLMT70AonTapeand

Reel:0.1°C(max)at30°C

ItsoutputenablepinallowsmultipleLMT70stoshare

oneADCchannel,thussimplifyingADCcalibration

•VeryLinearAnalogTemperatureSensorwith

andreducingtheoverallsystemcostforprecision

OutputEnablePin

temperaturesensing.TheLMT70alsohasalinear

•NTCOutputSlope:-5.19mV/°C

andlowimpedanceoutputallowingseamless

•OutputOn/OffSwitchwithR

DSon

<80Ω

interfacetoanoff-the-shelfMCU/ADC.Dissipating

•WidePowerSupplyRange:2.0Vto5.5V

lessthan36µW,theLMT70hasultra-lowself-heating

supportingitshigh-precisionoverawidetemperature

•LowPowerSupplyCurrent:9.2µA(typ)12µA

range.

(max)

TheLMT70Aprovidesunparalleledtemperature

•UltraSmall0.88mmby0.88mm4-bumpWLCSP

matchingperformanceof0.1°C(max)fortwo

(DSBGA)Package

adjacentLMT70A'spickedfromthesametapeand

reel.Therefore,theLMT70Aisanidealsolutionfor

2Applications

energymeteringapplicationsrequiringheattransfer

•InternetofThings(IoT)SensorNodes

calculations.

•IndustrialRTD(ClassAA)orPrecisionNTC/PTC

DeviceInformation

(1)

ThermistorReplacement

PARTNUMBERPACKAGEBODYSIZE(NOM)

•Medical/FitnessEquipment

DSBGA-WLCSP(4)

LMT700.88mmx0.88mm

•MedicalThermometer

YFQ

•HumanBodytemperaturemonitor

(1)Forallavailablepackages,seetheorderableaddendumat

•MeteringTemperatureCompensation

theendofthedatasheet.

4Wide-RangePrecisionActiveRTDorNTCReplacement(−55°Cto150°C)

LMT70AccuracyvsTemperature

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties