Texas Instruments INA219 Handleiding

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Power Register

Current Register

IC-/SMBUS-

Compatible

Interface

2

Voltage Register

V

IN+

V

IN-

V

S

(Supply Voltage)

A0

A1

Data

CLK

ADC

PGA

INA219

GND

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

INA219

SBOS448G–AUGUST2008–REVISEDDECEMBER2015

INA219Zerø-Drift,BidirectionalCurrent/PowerMonitorWithI

2

CInterface

1Features3Description

TheINA219isacurrentshuntandpowermonitor

1

•SensesBusVoltagesfrom0to26V

withanI

2

C-orSMBUS-compatibleinterface.The

•ReportsCurrent,Voltage,andPower

devicemonitorsbothshuntvoltagedropandbus

•16ProgrammableAddresses

supplyvoltage,withprogrammableconversiontimes

andfiltering.Aprogrammablecalibrationvalue,

•HighAccuracy:0.5%(Maximum)Over

combinedwithaninternalmultiplier,enablesdirect

Temperature(INA219B)

readoutsofcurrentinamperes.Anadditional

•FilteringOptions

multiplyingregistercalculatespowerinwatts.The

•CalibrationRegisters

I

2

C-orSMBUS-compatibleinterfacefeatures16

programmableaddresses.

•SOT23-8andSOIC-8Packages

TheINA219isavailableintwogrades:AandB.The

2Applications

Bgradeversionhashigheraccuracyandhigher

precisionspecifications.

•Servers

•TelecomEquipment

TheINA219sensesacrossshuntsonbusesthatcan

varyfrom0to26V.Thedeviceusesasingle3-to

•NotebookComputers

5.5-Vsupply,drawingamaximumof1mAofsupply

•PowerManagement

current.TheINA219operatesfrom–40°Cto125°C.

•BatteryChargers

DeviceInformation

(1)

•WeldingEquipment

PARTNUMBERPACKAGEBODYSIZE(NOM)

•PowerSupplies

SOIC(8)3.91mm×4.90mm

•TestEquipment

INA219

SOT-23(8)1.63mm×2.90mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

SimplifiedSchematic

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties