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SENSOR

+

-

+

-

ADC

PRESSURE

EMI HARDENED

EMI HARDENED

+

-

V

+

R1

R2

INTERFERING

RF SOURCES

NO RF RELATED

DISTURBANCES

LMV881

www.ti.com

SNOSC62B–JANUARY2012–REVISEDMAY2013

LMV88123MHzLowPowerCMOSEMIHardenedOperationalAmplifierwith1.8VLogic

Shutdown

CheckforSamples:LMV881

1

FEATURES

APPLICATIONS

2

•UnlessOtherwiseNoted,TypicalValuesatT

A

•WeightScaleSystems

=25°C,V

+

=3.3V

•Filters/Buffers

•SupplyVoltage2.7Vto5.5V

•MedicalDiagnosisEquipment

•SupplyCurrent1.65mADESCRIPTION

TheLMV881isalowpowerCMOSinputoperational

•ShutdownCurrent200pA

amplifierthatprovideslowinputbiascurrents,arail

•InputOffsetVoltage1mVMax

torailoutputwithhighoutputdrivecapabilityanda

•InputBiasCurrent0.1pA

widetemperaturerangeof−40°Cto+125°C.

Additionally,theLMV881isEMIhardenedto

•GBW23MHz

minimizesensitivitytoexternalinterference.

•EMIRRat1.8GHz105dB

TheLMV881hasamaximuminputoffsetvoltageof1

•InputNoiseVoltageat1kHz9nV/√Hz

mVwithaninputcommon-modevoltagerangethat

•SlewRate12V/µs

includesground.Overanoperatingsupplyrange

•OutputVoltageSwingRail-to-Rail

from2.7Vto5.5V,theLMV881providesatypical

PSRRof110dBandaCMRRof110dB.Thismakes

•OutputCurrentDrive70mA

theLMV881idealforEMIsensitiveapplicationsas

•OperatingAmbientTemperatureRange−40°C

wellasexceptionalperformanceasarobustgeneral

to125°C

purposepart.

•SpaceSavingMicro-UQFNPackage1.5x1.0x

TheunitygainstableLMV881features23MHzof

0.5mm

bandwidthwhileconsumingonly1.65mAofcurrent.

Thisdevicealsomaintainsstabilityforcapacitive

loadsaslargeas200pF.

TypicalApplication

Figure1.EMIHardenedSensorApplication

1

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PRODUCTIONDATAinformationiscurrentasofpublicationdate.

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ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer