Texas Instruments LMH0303 Handleiding

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LMH0356

3G/HD/SD

SDI Reclocker

SDI In

ENABLE

SD/HD

Clock or

Second

Data Output

FAULT

SDASCL

LMH0303

3G/HD/SD

SDI Cable Driver

Microcontroller

or

FPGA

SMBus

Data

SMBus

Clock

SDI

SDI Out

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LMH0303

SNLS285H–APRIL2008–REVISEDMAY2016

LMH03033-GbpsHD/SDSDICableDriverWithCableDetect

1

1Features

1

•SupportsST424(3G),292(HD),and259(SD)

•DataRatesupto2.97Gbps

•SupportsDVB-ASIat270Mbps

•CableDetectonOutput

•LossofSignalDetectatInput

•OutputDriverPower-DownControl

•TypicalPowerConsumption:130mWinSDMode

and155mWinHDMode

•TypicalPowerConsumptionofthePower-Save

Mode:4mW

•Single3.3-VSupplyOperation

•75-ΩSingle-EndedOutputs

•100-ΩDifferentialInput

•SelectableSlewRate

•IndustrialTemperatureRange:−40°Cto85°C

•16-PinWQFNPackage

•FootprintCompatibleWiththeLMH0302

2Applications

•ST424,ST292,ST344,andST259Serial

DigitalInterfaces

•DigitalVideoRoutersandSwitches

•DistributionAmplifiers

3Description

TheLMH0303deviceisdesignedforuseinST424,

ST292,ST344,andST259serialdigitalvideo

applications.TheLMH0303drives75-Ωtransmission

lines(Belden1694A,Belden8281,orequivalent)at

dataratesupto2.97Gbps.

TheLMH0303includesintelligentsensingcapabilities

toimprovesystemdiagnostics.Thecabledetect

featuresensesnear-endterminationtodetermineifa

cableiscorrectlyattachedtotheoutputBNC.Input

lossofsignal(LOS)detectsthepresenceofavalid

signalattheinputofthecabledriver.Thesesensing

featuresmaybeusedtoalerttheuserofasystem

faultandactivateadeeppower-savemode,reducing

thepowerconsumptionofthecabledriverto4mW.

ThesefeaturesareaccessiblethroughanSMBus

interface.

TheLMH0303providestwoselectableslewratesfor

ST259andST424or292.Theoutputamplitudeis

adjustable±10%in5-mVstepsthroughtheSMBus.

TheLMH0303ispoweredfromasingle3.3-Vsupply.

Powerconsumptionistypically130mWinSDmode

and155mWinHDmode.TheLMH0303isavailable

ina16-pinWQFNpackage.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMH0303WQFN(16)4.00mm×4.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplicationSchematic

Product specificaties