Texas Instruments LMV1012 Handleiding

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OUTPUT

GND

INPUT

-

+

2.2k

2.2PF

V

DD

-

+

DIAPHRAGM

AIRGAP

BACKPLATE

ELECTRET

CONNECTOR

LMV1012

x

x

x

x

x

x

x

x

xxx

x

xx

xx

IC

LMV1012

www.ti.com

SNAS194H–NOVEMBER2002–REVISEDMAY2013

LMV1012AnalogSeries:Pre-AmplifiedIC'sforHighGain2-WireMicrophones

CheckforSamples:LMV1012

1

FEATURES

DESCRIPTION

TheLMV1012isanaudioamplifierseriesforsmall

2

•TypicalLMV1012-15,2.2VSupply,R

L

=2.2kΩ,

formfactorelectretmicrophones.This2-wireportfolio

C=2.2μF,V

IN

=18mV

PP

,UnlessOtherwise

isdesignedtoreplacetheJFETamplifiercurrently

Specified

beingused.TheLMV1012seriesisideallysuitedfor

•SupplyVoltage:2V-5V

applicationsrequiringhighsignalintegrityinthe

presenceofambientorRFnoise,suchasincellular

•SupplyCurrent:<180μA

communications.TheLMV1012audioamplifiersare

•SignaltoNoiseRatio(A-Weighted):60dB

specifiedtooperateovera2.2Vto5.0Vsupply

•OutputVoltageNoise(A-Weighted):−89dBV

voltagerangewithfixedgainsof7.8dB,15.6dB,

•TotalHarmonicDistortion:0.09%

20.9dB,and23.8dB.Thedevicesofferexcellent

THD,gainaccuracyandtemperaturestabilityas

•VoltageGain

comparedtoaJFETmicrophone.

–LMV1012-07:7.8dB

TheLMV1012seriesenablesatwo-pinelectret

–LMV1012-15:15.6dB

microphonesolution,whichprovidesdirectpin-to-pin

–LMV1012-20:20.9dB

compatibilitywiththeexistingJFETmarket.

–LMV1012-25:23.8dB

Thedevicesareofferedinextremelythinspace

•TemperatureRange:−40°Cto85°C

saving4-bumpDSBGApackages.TheLMV1012XP

isdesignedfor1.0mmcanistersandthickerECM

•Offeredin4-BumpDSBGAPackages

canisters.Theseextremelyminiaturepackagesare

designedforelectretcondensermicrophones(ECM)

APPLICATIONS

formfactor.

•CellularPhones

•Headsets

•MobileCommunications

•AutomotiveAccessories

•PDAs

•AccessoryMicrophoneProducts

SchematicDiagramBuilt-InGainElectretMicrophone

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2002–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties