Texas Instruments LPV531 Handleiding

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V

IN

R1

R2

C1

V

OUT

+

-

I

SEL

+V

R3

R4

C2

R

EXT

LPV531

www.ti.com

SNOSAK5B–MARCH2006–REVISEDMARCH2013

LPV531ProgrammableMicropowerCMOSInput,Rail-to-RailOutputOperationalAmplifier

CheckforSamples:LPV531

1

FEATURES

DESCRIPTION

2

•(Typical5VSupply,unlessotherwiseNoted.)

TheLPV531isanextremelyversatileoperational

•SupplyVoltage2.7Vto5.5V

amplifier.Asingleexternalresistorgivesthesystem

designertheabilitytodefinethequiescentcurrent,

•DynamicPowerModeSetting

gainbandwidthproductandoutputshortcircuit

•ContinuouslyProgrammableSupplyCurrent

current.Thisinnovativefeaturegivesthesystem

–Range5μAto425μA

designeramethodtodynamicallyswitchthepower

•ContinuouslyProgrammableBandwidth

leveltooptimizetheperformanceoftheopampand

meetthesystemdesignrequirements.

–Range73kHzto4.6MHz

TheLPV531canbetailoredtoawidevarietyof

•InputCommonModeVoltageRange−0.3Vto

applications.Itoffersthesystemdesignertheability

3.8V

todynamicallytradeoffsupplycurrentforbandwidth

•CMRR95dB

byadjustingthecurrentdrawnfromtheI

SEL

pinusing

•Rail-to-RailOutputVoltageSwing

aDACorswitchingindifferentvalueresistorsin

serieswiththeI

SEL

pin.TheLPV531iscapableof

•InputOffsetVoltage1mV

operatingfrom73kHz,consumingonly5μA,toas

fastas4.6MHz,consumingonly425μA.Theinput

APPLICATIONS

offsetvoltageisrelativelyindependentandtherefore

•ACCoupledCircuits

isnotsignificantlyaffectedbythechosenpowerlevel.

•PortableInstrumentation

UtilizingaCMOSinputstage,theLPV531achieves

•ActiveFilters

aninputbiascurrentof50fAandacommonmode

inputvoltagewhichextendsfromthenegativerailto

TypicalApplication

within1.2Vofthepositivesupply.TheLPV531'srail-

to-railclassABoutputstageenablesthisopampto

offermaximumdynamicrangeatlowsupplyvoltage.

Offeredinthespacesaving6-pinSOTpackage,the

LPV531isidealforuseinhandheldelectronicsand

portableapplications.TheLPV531ismanufactured

usingTI’sadvancedVIP50process.

Afixedsupplycurrent/gainbandwidthisavailable

uponrequest.

Figure1.ACCoupledApplication

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2006–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties