Texas Instruments INA209 Handleiding

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INA209

1

FEATURESDESCRIPTION

APPLICATIONS

Critical

DAC+

Critical

DAC-

´

CMP

Filter

Watchdog

PowerRegister

CurrentRegister

IC

Interface

2

VoltageRegister

ConvertGNDGPIO

V

IN+

V

IN-

V

S

(SupplyVoltage)

Critical

Overlimit

Warning

Alert

Data

CLK

CMP

ADC

INA209

INA209

www.ti.com

.........................................................................................................................................................SBOS403B–JUNE2007–REVISEDMARCH2009

High-SideMeasurement,Bi-DirectionalCurrent/PowerMonitor

withI

2

C™Interface

23

•SENSESBUSVOLTAGESFROM0VTO+26V

TheINA209isahigh-sidecurrentshuntandpower

monitorwithanI

2

Cinterface.TheINA209monitors

•REPORTSCURRENT,VOLTAGE,AND

bothshuntdropandshuntbusvoltage.A

POWER;STORESPEAKS

programmablecalibrationvalue,combinedwithan

•TRIPLEWATCHDOGLIMITS:

internalmultiplier,enablesdirectreadoutsin

–LowerWarningwithDelay

amperes.Anadditionalmultiplyingregistercalculates

powerinwatts.TheINA209featurestwoseparate,

–UpperOver-limit,NoDelay

onboardwatchdogcapabilities:awarningcomparator

–FastAnalogCritical

andanover-limitcomparator.Thewarning

•HIGHACCURACY:1%MAXOVERTEMP

comparatorisusefulformonitoringlowerwarning

limitsandincorporatesauser-defineddelay.The

over-limitcomparatorassistswithmonitoringupper

limitsthatcouldrequireimmediatesystemshutdown.

•SERVERS

•TELECOMEQUIPMENT

TheINA209alsoincludesananalogcomparatorand

•AUTOMOTIVEaprogrammabledigital-to-analogconverter(DAC)

thatcombinetoprovidethefastestpossible

•POWERMANAGEMENT

responsestocurrentoverloadconditions.

•BATTERYCHARGERS

TheINA209canbeusedtogetherwithhotswap

•WELDINGEQUIPMENT

controllersthatalreadyuseacurrentsenseresistor.

•POWERSUPPLIES

TheINA209full-scalerangecanbeselectedtobe

•TESTEQUIPMENT

eitherwithinthehot-swapcontrollersenselimits,or

wideenoughtoincludethem.

TheINA209sensesacrossshuntsonbusesthatcan

varyfrom0Vto26V.Thedeviceusesasingle+3Vto

+5.5Vsupply,drawingamaximumof1.5mAof

supplycurrent.Itisspecifiedforoperationfrom

–25°Cto+85°C.

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2I2CisatrademarkofNXPSemiconductors.

3Allothertrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2007–2009,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties