Texas Instruments LMV1031 Handleiding
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V
IN
V
OUT
1x
GAIN
V
DC
V
DD
GND
GND
DIAPHRAGM
AIRGAP
BACKPLATE
ELECTRET
CONNECTOR
LMV1031
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x
x
x
x
x
x
x
xxx
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IC
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CC
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OUT
LMV1031
www.ti.com
SNOSAP8B–SEPTEMBER2005–REVISEDMAY2013
LMV1031-20AmplifierforInternal3-WireAnalogMicrophonesandExternalPreamplifier
CheckforSamples:LMV1031
1
FEATURES
DESCRIPTION
TheLMV1031audioamplifierisanidealreplacement
2
•(TypicalLMV1031-20,2VSupply;Unless
fortheJFETpreamplifierthatiscurrentlyusedinthe
OtherwiseNoted)
electretmicrophones.TheLMV1031isoptimizedfor
•SignaltoNoiseRatio62dB
applicationsthatrequireextendedbatterylife,such
•OutputVoltageNoise(A-Weighted)−86dBV
asBluetoothcommunicationlinks.Thesupplycurrent
fortheLMV1031isonly72μA.Thisisadramatic
•LowSupplyCurrent72μA
reductionfromthatrequiredforaJFETequipped
•SupplyVoltage2Vto5V
microphone.TheLMV1031,withitsseparateoutput
•InputImpedance>100MΩ
andsupplypins,offersahigherPSRRandeliminates
theneedforadditionalexternalcomponents.
•MaxInputSignal108mV
PP
•OutputVoltage1.09V
TheLMV1031isensuredtooperatefrom2Vto5V
supplyvoltageoverthefulltemperaturerange,hasa
•TemperatureRange−40°Cto85°C
fixedvoltagegainof20dBandenhancedSNR
•LargeDome4-BumpDSBGAPackagewith
performance.TheLMV1031isoptimizedforan
ImprovedAdhesionTechnology
outputbiasingof1.09V.
TheLMV1031haslessthan200Ωofoutput
APPLICATIONS
impedanceoverthefullaudiobandwidth.Thegain
•MobileCommunications-Bluetooth
responseoftheLMV1031isflatwithintheaudioband
andisstableoverthetemperaturerange.
•AccessoryMicrophoneProducts
•CellularPhones
TheLMV1031isavailableinalargedome4-bump
ultrathinDSBGApackagethatcaneasilyfitonthe
•PDAs
PCBinsidetheminiaturemicrophonemetalcan
(package).Thispackageisdesignedformicrophone
PCBsrequiring1kgadhesioncriteria.
BlockDiagramElectretMicrophone
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2005–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LMV1031 |
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