Texas Instruments LMV232 Handleiding

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PA1

ANTENNA

RF

IN

1

LMV232

RF

INPUT

OUT

R1

6.2 k:

RF

IN

2

PA2

RF

INPUT

FB

BSSD

V

DD

GND

A3

B3

C1

B1

A1

C3

C2

A2

R3

50:

C1

1.5 nF

COUPLER

COUPLER

TO BASEBAND

R2

50:

LMV232

www.ti.com

SNWS017C–DECEMBER2004–REVISEDMARCH2013

LMV232Dual-ChannelIntegratedMeanSquarePowerDetectorforCDMA&WCDMA

CheckforSamples:LMV232

1

FEATURES

DESCRIPTION

TheLMV232dualRFdetectorisdesignedforRF

•>20dBSquare-LawDetectionRange

transmitpowermeasurementinmobilephones.This

•2SequentiallySelectableRFInputs

dualmeansquareICisespeciallysuitedforaccurate

•LowPowerConsumptionShutdownMode

powermeasurementofRFsignalsexhibitinghigh

peak-to-averageratiosusedin3GandUMTS/CDMA

•ExternallyConfigurableGainandLFFilter

applications.TheLMV232savescalibrationsteps

Bandwidth.

andsystemcertificationandishighlyaccurate.The

•Internal50ΩRFTerminationImpedance

circuitoperateswithasinglesupplyfrom2.5to3.3V.

•OptimizedforUsewith20dBDirectional

TheLMV232containsameansquaredetectorwith

Coupler

twosequentiallyselectableRFinputs.TheRFinput

•LeadFree8-BumpDSBGAPackage1.5x1.5x

powerrangeofthedevicehasbeenoptimizedforuse

0.6mm

witha20dBdirectionalcoupler,withouttheneedfor

additionalexternalcomponents.AsingleexternalRC

combinationbetweenFBandOUTprovidesan

APPLICATIONS

externallyconfigurablegainandLFfilterbandwidthof

•3GMobileCommunications

thedevice.

•UMTS

Thedevicehastwodigitalinterfaces.Ashutdown

•WCDMA

functionisavailabletosetthedeviceinalow-power

•CDMA2000

shutdownmode.IncaseSD=HIGH,thedeviceisin

shutdown,ifSD=LOWthedeviceisactive.The

•TD-SCDMA

Band-Selectfunctioncontrolstheselectionofthe

•RFControl

activeRFinputchannel.IncaseBS=HIGH,RF

IN

1is

•WirelessLAN

active.IncaseBS=LOW,RF

IN

2isactive.

•PCCardandGPSModules

Thedualmeansquaredetectorisofferedinan8-

bumpDSBGA1.5x1.5x0.6mmpackage.This

DSBGApackagehasthesmallestfootprintand

height.

TYPICALAPPLICATION

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2004–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties