THS7316D资料

2021-05-14 来源：乌哈旅游

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THS7316

SLOS521–MARCH2007

3-ChannelHDTVVideoAmplifierWith5th-OrderFiltersand6-dBGain

FEATURES

••

3HDTVVideoAmplifiersforY'P'BP'R720pand1080i,G'B'R'(R'G'B'),VGA/SVGA/XGAIntegratedLow-PassFilters

–5th-Order36-MHz(–3dB)ButterworthFilter––1dBPassbandBandwidthat31MHz–30dBAttenuationat74MHzVersatileInputBiasing

–DC-CoupledWith140-mVInputShift–AC-CoupledwithSync-TipClamp–AllowsAC-CoupledWithBiasingBuilt-in6-dBGain(2V/V)

3-Vto5-VSingleSupplyOperationRail-to-RailOutput:

–OutputSwingsWithin100mVFromtheRailsAllowingACorDCOutputCoupling–SupportsDriving2LinesperChannel

Low18.3-mAat3.3-VTotalQuiescentCurrentLowDifferentialGain/Phaseof0.1%/0.1°SOIC-8Package

DESCRIPTION

FabricatedusingtheSilicon-Germanium(SiGe)BiCom-IIIprocess,theTHS7316isalowpowersingle-supply3-Vto5-V,3-channelintegratedvideobuffer.Itincorporatesa5th-ordermodifiedButterworthfilterwhichisusefulasaDACreconstructionfilteroranADCanti-aliasingfilter.The36-MHzfilterisaperfectchoiceforHDTVvideowhichincludesY'P'BP'R720p/1080i,G'B'R'(R'G'B'),andVGA/SVGA/XGAsignals.

AspartoftheTHS7316flexibility,theinputcanbeconfiguredforacordccoupledinputs.TheDC+140-mVinputoffsetshifttoallowforafullsyncdynamicrangeattheoutputwith0-Vinput.TheACcoupledmodesincludeatransparentsync-tipclampoptionforsignalswithsyncsuchasY’orGreenwithsync.AC-coupledbiasingforP’B/P’R/Non-syncchannelscanbeachievedbyaddinganexternalresistor.

TheTHS7316istheperfectchoiceforalloutputbufferapplications.Itsrail-to-railoutputstagewith6-dBgainallowsforbothacanddclinedriving.Theabilitytodrive2videolinesperchannel,or75-Ωloads,allowsformaximumflexibilityasavideolinedriver.The18.3-mAtotalquiescentcurrentmakesitanexcellentchoiceforUSBpowered,portable,orotherpowersensitivevideoapplications.

TheTHS7316isavailableinasmallSOIC-8packagethatisRoHScompliant.

Y’/󰀀G’Out75W•

•••

APPLICATIONS

•••

SetTopBoxOutputVideoBufferingPVR/DVDROutputBuffering

USB/PortableLowPowerVideoBuffering

3.3󰀀VDAC/EncoderY’/󰀀G’R1P’B/󰀀B’RP’R/󰀀R’R3.3󰀀V23475WTHS7316CH.1󰀀INCH.2󰀀INCH.3󰀀INVS+CH.1󰀀OUTCH.2󰀀OUTCH.3󰀀OUTGNDHDTV720p/1080iY’P’BP’RG’B’R’VGASVGAXGA876575WP’B/󰀀B’Out75WP’R/󰀀R’Out75W75WFigure1.3.3-VSingle-SupplyDC-Input/DCOutputCoupledVideoLineDriver

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.

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THS7316

SLOS521–MARCH2007

www.ti.com

ThisintegratedcircuitcanbedamagedbyESD.TexasInstrumentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.

ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.

PACKAGING/ORDERINGINFORMATION

PACKAGEDDEVICES

THS7316DTHS7316DR

(1)

PACKAGETYPE(1)

SOIC-8

TRANSPORTMEDIA,QUANTITY

Rails,75TapeandReel,2500

Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTIWebsiteatwww.ti.com.

ABSOLUTEMAXIMUMRATINGS

overoperatingfree-airtemperaturerange(unlessotherwisenoted)

Supplyvoltage,VS+toGND

VIIOTJTJTstg

InputvoltageOutputcurrent

Continuouspowerdissipation

Maximumjunctiontemperature,anycondition(2)

Maximumjunctiontemperature,continuousoperation,longtermreliability(3)Storagetemperaturerange

HBM

ESDratings

CDMMM

(1)(2)(3)

(1)

VALUE5.5–0.4VtoVS+

±90150125–65to15020001500200

UNITVVmA°C°C°CV

SeeDissipationRatingTable

Stressesabovethoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolutemaximumratedconditionsforextendedperiodsmaydegradedevicereliability.Theabsolutemaximumjunctiontemperatureunderanyconditionislimitedbytheconstraintsofthesiliconprocess.

Theabsolutemaximumjunctiontemperatureforcontinuousoperationislimitedbythepackageconstraints.Operationabovethistemperaturemayresultinreducedreliabilityand/orlifetimeofthedevice.

DISSIPATIONRATINGS

PACKAGESOIC-8(D)

(1)(2)

θJC(°C/W)16.8

θJA(°C/W)130(2)

POWERRATING(1)

(TJ=125°C)

TA=25°C769mW

TA=85°C308mW

Powerratingisdeterminedwithajunctiontemperatureof125°C.Thisisthepointwhereperformancestartstodegradeandlong-termreliabilitystartstobereduced.ThermalmanagementofthefinalPCBshouldstrivetokeepthejunctiontemperatureatorbelow125°Cforbestperformanceandreliability.

ThisdatawastakenwiththeJEDECHigh-KtestPCB.FortheJEDEClow-KtestPCB,theθJAis196°C/W.

RECOMMENDEDOPERATINGCONDITIONS

MIN

VS+TA

SupplyvoltageAmbienttemperature

3–40

MAX

585

UNITV°C

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THS7316

SLOS521–MARCH2007

FUNCTIONALDIAGRAM

+Vs+gm-Channel󰀀1Input800󰀀kWSync-TipClamp(DC󰀀Restore)+Vs+gm-Channel󰀀2Input800󰀀kWSync-TipClamp(DC󰀀Restore)+Vs+gm-Channel󰀀3Input800󰀀kWSync-TipClamp(DC󰀀Restore)140󰀀mVLevelShiftLPF5-Pole36-MHz6dBChannel󰀀1Output140󰀀mVLevelShiftLPF5-Pole36-MHz6dBChannel󰀀2Output140󰀀mVLevelShiftLPF5-Pole36-MHz6dBChannel󰀀3Output3󰀀V󰀀to󰀀5󰀀VPINCONFIGURATION

SOIC-8(D)(TOPVIEW)

THS7316

CH.1󰀀IN1CH.2󰀀IN2CH.3󰀀IN3VS+48765CH.1󰀀OUTCH.2󰀀OUTCH.3󰀀OUTGND

TERMINALFUNCTIONS

TERMINALNAME

CH.1–INPUTCH.2–INPUTCH.3–INPUT+VsGND

CH.3–OUTPUTCH.2–OUTPUTCH.1–OUTPUT

NO.SOIC-8

12345678

I/OIIIIIOOO

VideoInput–Channel1VideoInput–Channel2VideoInput–Channel3

PositivePowerSupplyPin–connectto3Vto5V.GroundPinforallinternalcircuitry.VideoOutput–Channel3VideoOutput–Channel2VideoOutput–Channel1

DESCRIPTION

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THS7316

SLOS521–MARCH2007

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ELECTRICALCHARACTERISTICSVS+=3.3V:

RL=150ΩtoGND–ReferenceFigure2andFigure3(unlessotherwisenoted)

TYP

PARAMETER

TESTCONDITIONS

25°C

OVERTEMPERATURE0°Cto70°C

–40°Cto85°C

UNITS

MIN/MAX/TYPMin/MaxMin/MaxTypMin/MaxMinTypTypTypTyp

°dBdBdB

5.7/6.3

5.65/6.35

dBΩ

210/370

200/380

190/390

mVVµAkΩpFV

2.85

2.75

VVVV

0.17

0.2

0.21

VVVmAmA

5.52.8522.514

5.52.852313.6

5.52.8523.413.1

VVmAmAdB

TypTypTypTypMin/MaxTypMin/MaxTypTypTypTypTypMinTypTypTypMaxTypTypTypTypMaxMinMaxMinTyp

ACPERFORMANCE

Small-signalbandwidth(–3dB)Large-signalbandwidth(–3dB)–1dBPassbandbandwidthAttenuation

Withrespectto100kHzGroupdelay

Groupdelayvariationwithrespectto100kHzChannel-to-channeldelayDifferentialgainDifferentialphaseTotalharmonicdistortionSignaltonoiseratio

Channel-to-channelcrosstalkACGain–AllchannelsOutputImpedanceDCPERFORMANCEBiasedoutputvoltageInputvoltagerange

SynctipclampchargecurrentInputresistanceInputcapacitance

OUTPUTCHARACTERISTICS

RL=150Ωto1.65V

Highoutputvoltageswing

RL=150ΩtoGNDRL=75Ωto1.65VRL=75ΩtoGND

RL=150Ωto1.65V(VI=–0.15V)

Lowoutputvoltageswing

RL=150ΩtoGND(VI=–0.15V)RL=75Ωto1.65V(VI=–0.15V)RL=75ΩtoGND(VI=–0.15V)

Outputcurrent(sourcing)Outputcurrent(sinking)POWERSUPPLY

MaximumoperatingvoltageMinimumoperatingvoltageMaximumquiescentcurrentMinimumquiescentcurrentPowerSupplyRejection(+PSRR)

VI=0VVI=0V

3.33.318.318.352

RL=10Ωto1.65VRL=10Ωto1.65V

3.153.13.13.00.140.080.30.18070

VI=0V

DCinput,limitedbyoutputVI=–0.1V

285–0.1/1.463608002

f=10MHzNTSC/PALNTSC/PAL

f=1MHz;VO=2VPP

NoWeighting,100kHzto37.5MHzf=1MHzf=27MHz(2)f=74MHz(2)f=100kHzf=27MHzVO–0.2VPP(1)VO–2VPP(1)

3636310.33016.25.40.30.1/0.15%0.1/0.1–7067–6160.5

–0.3/2.420

–0.35/2.4

–0.4/2.619

31/4331/43

30/4430/44

MHzMHzMHzdBdBnsnsns

(1)(2)TheMin/Maxvalueslistedforthisspecificationarespecifiedbydesignandcharacterizationonly.

3.3-VSupplyFilterspecificationsarespecifiedby100%testingat5-Vsupplyalongwithdesignandcharacterizationonly.

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THS7316

SLOS521–MARCH2007

ELECTRICALCHARACTERISTICSVS+=5V:

RL=150ΩtoGND–ReferenceFigure2andFigure3(unlessotherwisenoted)

TYP

PARAMETER

TESTCONDITIONS

25°C

OVERTEMPERATURE0°Cto70°C

–40°Cto85°C

UNITS

MIN/MAX/TYPMin/MaxMin/MaxTypMin/MaxMinTypTypTypTyp

°dBdBdB

5.7/6.3

5.65/6.35

dBΩ

210/370

200/380

190/390

mVVµAkΩpFV

4.2

4.1

VVVV

0.23

0.26

0.27

VVVmAmA

5.52.852314.7

5.52.852514.2

5.52.852613.8

VVmAmAdB

TypTypTypTypMin/MaxTypMin/MaxTypTypTypTypTypMinTypTypTypMaxTypTypTypTypMaxMinMaxMinTyp

ACPERFORMANCE

Small-signalbandwidth(–3dB)Large-signalbandwidth(–3dB)–1dBPassbandbandwidthAttenuation

Withrespectto100kHzGroupdelay

Groupdelayvariationwithrespectto100kHzChannel-to-channeldelayDifferentialgainDifferentialphaseTotalharmonicdistortionSignaltonoiseratio

Channel-to-channelcrosstalkACGain–AllchannelsOutputImpedanceDCPERFORMANCEBiasedoutputvoltageInputvoltagerange

SynctipclampchargecurrentInputresistanceInputcapacitance

OUTPUTCHARACTERISTICS

RL=150Ωto2.5V

Highoutputvoltageswing

RL=150ΩtoGNDRL=75Ωto2.5VRL=75ΩtoGND

RL=150Ωto2.5V(VI=–0.15V)

Lowoutputvoltageswing

RL=150ΩtoGND(VI=–0.15V)RL=75Ωto2.5V(VI=–0.15V)RL=75ΩtoGND(VI=–0.15V)

Outputcurrent(sourcing)Outputcurrent(sinking)POWERSUPPLY

MaximumoperatingvoltageMinimumoperatingvoltageMaximumquiescentcurrentMinimumquiescentcurrentPowerSupplyRejection(+PSRR)

VI=0VVI=0V

5519.319.352

RL=10Ωto2.5VRL=10Ωto2.5V

4.854.74.74.50.190.090.350.19085

VI=0V

LimitedbyoutputVI=–0.1V

290–0.1/2.33808002

f=10MHzNTSC/PALNTSC/PAL

f=1MHz;VO=2VPP

NoWeighting,100kHzto37.5MHzf=1MHzf=27MHzf=74MHzf=100kHzf=27MHzVO–0.2VPP(1)VO–2VPP(1)

3636310.33016.15.40.30.1/0.15%0.1/0.1–7067–6260.5

–0.3/2.420

–0.35/2.5

–0.4/2.619

31/4331/43

30/4430/44

MHzMHzMHzdBdBnsnsns

(1)TheMin/Maxvalueslistedforthisspecificationarespecifiedbydesignandcharacterizationonly.

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THS7316

SLOS521–MARCH2007

DUTRLOAD1CH.1IN2CH.2INCH.1OUTCH.2OUTCH.3OUTGNDwww.ti.com

RTERM8765RSOURCERTERM3CH.3IN4VS+RLOADVSOURCE0.1mFRTERM++VS100mFRLOADFigure2.DCCoupledInputandOutputTestCircuit

CINRTERMCINRTERM123CH.1INCH.2INCH.3INVS+470mF+DUTCH.1OUTCH.2OUTCH.3OUTGNDRLOAD87650.1mF470mF+0.1mF470mF+RSOURCERLOADCIN4VSOURCE0.1mFRTERM++VS100mF0.1mFRLOADFigure3.ACCoupledInputandOutputTestCircuit

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THS7316

SLOS521–MARCH2007

TYPICALCHARACTERISTICS

SMALL-SIGNALGAINvsFREQUENCY

100

450−45

−10−20−30−40−50−600.1

VS=󰀀3.3󰀀VVO=󰀀200󰀀mVPP1

f−Frequency−MHz

100

RL=󰀀75W||󰀀13󰀀pFRL=󰀀150W||󰀀13󰀀pF−90

PHASEvsFREQUENCY

Small-Signal󰀀Gain−dBPhase−o−135−180−225−270−315−360

0.1

VS=󰀀3.3󰀀VVO-󰀀200󰀀mVPPRL=󰀀150W||󰀀13󰀀pF1

100

f−Frequency−MHz

Figure4.

SMALL-SIGNALGAINvsFREQUENCY

6.56.0

Figure5.

GROUPDELAYvsFREQUENCY

Small-Signal󰀀Gain−dB5.55.04.54.03.53.02.5

f−Frequency−MHz

100

VS=󰀀3.3󰀀VVO=󰀀200󰀀mVPP100.1

RL=󰀀75W||󰀀13󰀀pFGroup󰀀Delay−nsRL=󰀀150W||󰀀13󰀀pF20

VS=󰀀3.3󰀀VVO=󰀀200󰀀mVPPRL=󰀀150W||󰀀13󰀀pF1

100

f−Frequency−MHz

Figure6.Figure7.

SMALL-SIGNALFREQUENCYRESPONSEvs

CAPACITIVELOADING

100

LARGE-SIGNALFREQUENCYRESPONSE

100−10

Small-Signal󰀀Gain−dB−10−20−30−40

CL=󰀀5󰀀pF−50

CL=󰀀20󰀀pF−60

VS=󰀀3.3󰀀VVO=󰀀200󰀀mVPPLoad󰀀=󰀀150W||󰀀CLCL=󰀀13󰀀pFSignal󰀀Gain−dB−20

VS=󰀀3.3󰀀V−30−40−50−60

100

f−Frequency−MHz

VO=󰀀2󰀀VPPLoad󰀀=󰀀150W||󰀀13󰀀pFVO=󰀀0.2󰀀VPP1101001k

f−Frequency−MHz

Figure8.Figure9.

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SLOS521–MARCH2007

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TYPICALCHARACTERISTICS(continued)

2ndHARMONICDISTORTIONvs

OUTPUTVOLTAGE

-20

VS=󰀀3.3󰀀VVS=󰀀3.3󰀀V3rdHARMONICDISTORTIONvs

OUTPUTVOLTAGE

2nd󰀀Order󰀀Harmonic󰀀Distortion−dB3rd󰀀Order󰀀Harmonic󰀀Distortion−dB-30-40

Load󰀀=󰀀150W||󰀀13󰀀pFF󰀀=󰀀8󰀀MHzF󰀀=󰀀16󰀀MHz-30-40

Load󰀀=󰀀150W||󰀀13󰀀pFF󰀀=󰀀16󰀀MHzF󰀀=󰀀4󰀀MHzF󰀀=󰀀8󰀀MHz-50-60-70-80

F󰀀=󰀀4󰀀MHz-900.5

F󰀀=󰀀2󰀀MHz1.5

2.5

F󰀀=󰀀1󰀀MHz-50-60-70-80-90-100

0.5

1.5

F󰀀=󰀀2󰀀MHzF󰀀=󰀀1󰀀MHz2

2.5

VO−Output󰀀Voltage−VPP

Figure10.

CROSSTALKvsFREQUENCY

−30−40

VS=󰀀3.3󰀀VVO=󰀀1󰀀VPP100

Figure11.

SMALL-SIGNALGAINvsFREQUENCY

Small-Signal󰀀Gain−dBSmall-Signal󰀀Gain−dBRL=󰀀150W||󰀀13󰀀pF−50−60−70

Ch.2󰀀<->󰀀Ch.3−80−90

0.1

Ch.1󰀀<->󰀀Ch.3Ch.1󰀀<->󰀀Ch.2−10

RL=󰀀150W||󰀀13󰀀pF−20−30−40−50−60

0.1

VS=󰀀5󰀀VVO=󰀀200󰀀mVPP1

f−Frequency−MHz

100

RL=󰀀75W||󰀀13󰀀pF110

f−Frequency−MHz

1001k

Figure12.

PHASEvsFREQUENCY

450

6.56.0

Figure13.

SMALL-SIGNALGAINvsFREQUENCY

Small-Signal󰀀Gain−dB−45−905.55.04.54.03.53.02.5

VS=󰀀5󰀀VVO=󰀀200󰀀mVPP1

f−Frequency−MHz

100

RL=󰀀75W||󰀀13󰀀pFRL=󰀀150W||󰀀13󰀀pFPhase−o−135−180−225−270−315−3600.1

VS=󰀀5󰀀VVO-󰀀200󰀀mVPPRL=󰀀150W||󰀀13󰀀pF1

100

f−Frequency−MHz

Figure14.Figure15.

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THS7316

SLOS521–MARCH2007

TYPICALCHARACTERISTICS(continued)

GROUPDELAYvsFREQUENCY

100−10

LARGE-SIGNALFREQUENCYRESPONSE

Group󰀀Delay−nsSignal󰀀Gain−dB20

−20

VS=󰀀5󰀀V−30−40−50−60

VO=󰀀2󰀀VPP1

100

Load󰀀=󰀀150W||󰀀13󰀀pFVO=󰀀0.2󰀀VPP15

VS=󰀀5󰀀VVO=󰀀200󰀀mVPPRL=󰀀150W||󰀀13󰀀pF100.1

100

f−Frequency−MHzf−Frequency−MHz

Figure16.

SMALL-SIGNALFREQUENCYRESPONSEvs

CAPACITIVELOADING

-20

Figure17.

2ndHARMONICDISTORTIONvs

OUTPUTVOLTAGE

2nd󰀀Order󰀀Harmonic󰀀Distortion−dBVS=󰀀5󰀀VLoad󰀀=󰀀150W||󰀀13󰀀pFF󰀀=󰀀8󰀀MHz0-30-40

Small-Signal󰀀Gain−dB−10−20−30−40

CL=󰀀5󰀀pF−50

CL=󰀀20󰀀pF−60

1101001kf−Frequency−MHz

VS=󰀀5󰀀VVO=󰀀200󰀀mVPPLoad󰀀=󰀀150W||󰀀CLCL=󰀀13󰀀pFF󰀀=󰀀16󰀀MHz-50-60-70-80

F󰀀=󰀀4󰀀MHz-900.5

1.5

F󰀀=󰀀2󰀀MHz2.5

F󰀀=󰀀1󰀀MHz3.5

4.5

VO−Output󰀀Voltage−VPP

Figure18.

3rdHARMONICDISTORTIONvs

OUTPUTVOLTAGE

-20

VS=󰀀5󰀀V−30

F󰀀=󰀀8󰀀MHz−40

Load󰀀=󰀀150W||󰀀13󰀀pFF󰀀=󰀀16󰀀MHz-50-60-70-80-90-100

0.5

1.5

2.5

F󰀀=󰀀2󰀀MHzF󰀀=󰀀1󰀀MHz3.5

4.5

−90

0.1

F󰀀=󰀀4󰀀MHzVS=󰀀5󰀀VVO=󰀀1󰀀VPPFigure19.

CROSSTALKvsFREQUENCY

3rd󰀀Order󰀀Harmonic󰀀Distortion−dB-30-40

Small-Signal󰀀Gain−dBRL=󰀀150W||󰀀13󰀀pF−50−60−70

Ch.2󰀀<->󰀀Ch.3−80

Ch.1󰀀<->󰀀Ch.3Ch.1󰀀<->󰀀Ch.210

f−Frequency−MHz

1001k

VO−Output󰀀Voltage−VPP

Figure20.Figure21.

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TYPICALCHARACTERISTICS(continued)

QUIESCENTCURRENTvsTEMPERATURE

6.1VS=󰀀5󰀀V6.086.06

VS=󰀀3.3󰀀VVS=󰀀5󰀀VVOLTAGEGAINvsTEMPERATURE

IQ−Quiescent󰀀Current−mA19.5

AV−Voltage󰀀Gain−dB10203040

5060708090

6.046.0265.985.965.945.92

VS=󰀀3.3󰀀V18.5

17.5

-40-30-20-1005.9

-40-30-20-100

102030405060708090

TA−AmbientTemperature−oCTA−AmbientTemperature−oC

Figure22.

ATTENUATIONat27MHzvsTEMPERATURE

0.70.6

3332VS=󰀀5󰀀V31302928

-40-30-20-100

Figure23.

ATTENUATIONat27MHzvsTEMPERATURE

Attenuation󰀀at󰀀27󰀀MHz−dBVS=󰀀5󰀀V0.50.40.30.20.1

-40-30-20-100

102030405060708090

Attenuation󰀀at󰀀74󰀀MHz−dB102030405060708090

TA−AmbientTemperature−oCTA−AmbientTemperature−oC

Figure24.Figure25.

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THS7316

SLOS521–MARCH2007

APPLICATIONINFORMATION

TheTHS7316istargetedforstandarddefinitionvideooutputbufferapplications.Althoughitcanbeusedfornumerousotherapplications,theneedsandrequirementsofthevideosignalisanimportantdesignparameteroftheTHS7316.BuiltontheSiliconGermanium(SiGe)BiCom-3process,theTHS7316incorporatesmanyfeaturesnottypicallyfoundinintegratedvideopartswhileconsuminglowpower.

TheTHS7316hasthefollowingfeatures:

•Single-Supply3-Vto5-Voperationwithlowtotalquiescentcurrentof18.3-mAat3.3-Vand19.3-mAat5-V.•InputconfigurationacceptingDC+Levelshift,ACSync-TipClamp.

•AC-Biasingisaccomplishedwiththeuseofanexternalpull-upresistortothepositivepowersupply.•5th-OrderLowPassFilterforDACreconstructionorADCimagerejection:

–36-MHzforHDTV,Y'P'BP'R720p/1080i,G'B'R'(R'G'B'),andComputerVGA/SVGA/XGAsignals.

–CanalsobeusedforSDTV(480i,576i,CVBS,S-Video),andEDTV(480pand576p)signalsifdesired.•Internalfixedgainof2V/V(6dB)bufferthatcandriveupto2videolinesperchannelwithdccouplingortraditionalaccoupling.

•Signalflow-throughconfigurationusingan8-pinSOICpackagethatcomplieswiththelatest(RoHScompatible)andGreenmanufacturingrequirements.

OPERATINGVOLTAGE

TheTHS7316isdesignedtooperatefrom3-Vto5-Vovera–40°Cto85°Ctemperaturerange.Theimpactonperformanceovertheentiretemperaturerangeisnegligibleduetotheimplementationofthinfilmresistorsandhighquality–lowtemperaturecoefficientcapacitors.

Thepowersupplypinsshouldhavea0.1-µFto0.01-µFcapacitorplacedascloseaspossibletothesepins.FailuretodosomayresultintheTHS7316outputsringingorhaveanoscillation.Additionally,alargecapacitor,suchas22µFto100µF,shouldbeplacedonthepowersupplylinetominimizeinterferencewith50/60Hzlinefrequencies.

INPUTVOLTAGE

TheTHS7316inputrangeallowsforaninputsignalrangefrom–0.3Vtoabout(Vs+–1.5V).But,duetotheinternalfixedgainof2V/V(6dB)andtheinternallevelshiftofnominally140-mV,theoutputisgenerallythelimitingfactorfortheallowablelinearinputrange.Forexample,witha5-Vsupply,thelinearinputrangeisfrom–0.3Vto3.5V.However,duetothegainandlevelshift,thelinearoutputrangelimitstheallowablelinearinputrangetobefromabout–0.1Vto2.3V.

INPUTOVERVOLTAGEPROTECTION

TheTHS7316isbuiltusingahigh-speedcomplementarybipolarandCMOSprocess.Theinternaljunctionbreakdownvoltagesarelowforthesesmallgeometrydevices.ThesebreakdownsarereflectedintheAbsoluteMaximumRatingstable.AllinputandoutputdevicepinsareprotectedwithinternalESDprotectiondiodestothepowersupplies,asshowninFigure26.

+VsExternalInput/OutputPin

InternalCircuitryFigure26.InternalESDProtection

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Thesediodesprovidemoderateprotectiontoinputoverdrivevoltagesaboveandbelowthesuppliesaswell.Theprotectiondiodescantypicallysupport30-mAofcontinuouscurrentwhenoverdriven.

TYPICALCONFIGURATIONandVIDEOTERMINOLOGY

AtypicalapplicationcircuitusingtheTHS7316asavideobufferisshowninFigure27.ItshowsaDAC(orencodersuchastheTHS8200)drivingthethreeinputchannelsoftheTHS7316.AlthoughthesechannelsshowHDTVY'P'BP'R(sometimeslabeledY'C'BC'R)signalsofa720por1080isystem,theycanalsobeG'B'R'(R'G'B')signalsorothervariations.

NotethattheY'termisusedforthelumachannelsthroughoutthisdocumentratherthanthemorecommonluminance(Y)term.ThereasonistoaccountforthedefinitionofluminanceasstipulatedbytheCIE–InternationalCommissiononIllumination.Videodepartsfromtrueluminancesinceanonlinearterm,gamma,isaddedtothetrueRGBsignalstoformR'G'B'signals.TheseR'G'B'signalsarethenusedtomathematicallycreateluma(Y').Thusluminance(Y)isnotmaintainedprovidingadifferenceinterminology.

Thisrationaleisalsousedforthechroma(C')term.Chromaisderivedfromthenon-linearR'G'B'termsandthusitisnonlinear.Chominance(C)isderivedfromlinearRGBgivingthedifferencebetweenchroma(C')andchrominance(C).Thecolordifferencesignals(P'B/P'R/U'/V')arealsoreferencedthiswaytodenotethenonlinear(gammacorrected)signals.

R'G'B'(commonlymislabeledRGB)isalsocalledG’B’R’(againcommonlymislabeledasGBR)inprofessionalvideosystems.TheSMPTEcomponentstandardstipulatesthatthelumainformationisplacedonthefirstchannel,thebluecolordifferenceisplacedonthesecondchannel,andtheredcolordifferencesignalisplacedonthethirdchannel.ThisisconsistentwiththeY'P'BP'Rnomenclature.Becausethelumachannel(Y')carriesthesyncinformationandthegreenchannel(G')alsocarriesthesyncinformation,itmakeslogicalsensethatG'beplacedfirstinthesystem.Sincethebluecolordifferencechannel(P'B)isnextandtheredcolordifferencechannel(P'R)islast,thenitalsomakeslogicalsensetoplacetheB'signalonthesecondchannelandtheR'signalonthethirdchannelrespectfully.ThushardwarecompatibilityisbetterachievedwhenusingG'B'R'ratherthanR'G'B'.NotethatformanyG'B'R'systemssyncisembeddedonallthreechannels,butmaynotalwaysbethecaseinallsystems.

3.3󰀀V330mF75W+Y’OutDAC/EncoderY’R1P’BRP’RR23475WTHS7316CH.1󰀀INCH.2󰀀INCH.3󰀀INVS+CH.1󰀀OUTCH.2󰀀OUTCH.3󰀀OUTGNDHDTV720p/1080iY’P’BP’RG’B’R’VGASVGAXGA8765330mF75W+P’BOut75WP’ROut0.1mF+330mF75W75W3󰀀V󰀀to󰀀5󰀀V22mFFigure27.TypicalHDTVY'/P'B/P'RInputsFromDC-CoupledEncoder/DAC

WithAC-CoupledLineDriving

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INPUTMODEOFOPERATION–DC

TheinputstotheTHS7316allowsforbothac-coupledanddc-coupledinputs.ManyDACsorVideoEncoderscanbedcconnectedtotheTHS7316.Oneofthedrawbackstodccouplingiswhen0-Visappliedtotheinput.AlthoughtheinputoftheTHS7316allowsfora0-Vinputsignalwithnoissues,theoutputswingofatraditionalamplifiercannotyielda0-Vsignalresultinginpossibleclipping.Thisistrueforanysingle-supplyamplifierduetothelimitationsoftheoutputtransistors.BothCMOSandbipolartransistorscannotgoto0-Vwhilesinkingcurrent.Thistraitofatransistorisalsothesamereasonwhythehighestoutputvoltageisalwayslessthanthepowersupplyvoltagewhensourcingcurrent.

Thisoutputclippingcanreducethesyncamplitudes(bothhorizontalandverticalsyncamplitudes)onthevideosignal.AproblemoccursifthereceiverofthisvideosignalusesanAGClooptoaccountforlossesinthetransmissionline.SomevideoAGCcircuitsderivegainfromthehorizontalsyncamplitude.Ifclippingoccursonthesyncamplitude,thentheAGCcircuitcanincreasethegaintoomuch–resultingintoomuchamplitudegaincorrection.Thismayresultinapicturewithanoverlybrightdisplaywithtoomuchcolorsaturation.

Itisgoodengineeringdesignpracticetoensuresaturation/clippingdoesnottakeplace.Transistorsalwaystakeafiniteamountoftimetocomeoutofsaturation.Thissaturationcouldpossiblyresultintimingdelaysorotheraberrationsonthesignals.

Toeliminatesaturation/clippingproblems,theTHS7316hasadc+140-mVinputshiftfeature.Thisfeaturetakestheinputvoltageandaddsaninternal+140-mVshifttothesignal.SincetheTHS7316alsohasagainof6dB(2V/V),theresultingoutputwitha0-Vappliedinputsignalisabout280-mV.TheTHS7316rail-to-railoutputstagecancreatethisoutputlevelwhileconnectedtoatypicalvideoload.Thisensuresthatnosaturation/clippingofthesyncsignalsoccur.Thisisaconstantshiftregardlessoftheinputsignal.Forexample,ifa1-Vinputisapplied,theoutputisat2.28-V.

Becausetheinternalgainisfixedat6dB,thegaindictateswhattheallowablelinearinputvoltagerangecanbewithoutclippingconcerns.Forexample,ifthepowersupplyissetto3-V,themaximumoutputisabout2.9-Vwhiledrivingasignificantamountofcurrent.Thus,toavoidclipping,theallowableinputis((2.9V/2)–0.14V)=1.31V.Thisistrueforuptothemaximumrecommended5-Vpowersupplythatallowsabouta((4.9V/2)–0.14V)=2.31Vinputrangewhileavoidingclippingontheoutput.

TheinputimpedanceoftheTHS7316inthismodeofoperationisdictatedbytheinternal800-kΩpull-downresistor.ThisisshowninFigure28.Notethattheinternalvoltageshiftdoesnotappearattheinputpin,onlytheoutputpin.

+VsInternalCircuitryInput

800kW+-140󰀀mV󰀀LevelShifterFigure28.EquivalentDCInputModeCircuit

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INPUTMODEOFOPERATION–ACSYNCTIPCLAMP

SomevideoDACsorencodersarenotreferencedtogroundbutrathertothepositivepowersupply.TheseDACstypicallyonlysinkcurrentratherthanthemoretraditionalcurrentsourcingDACwheretheresistorisreferencedtoground.Theresultingvideosignalscanbetoohighofavoltageforadc-coupledvideobuffertofunctionproperly.ToaccountforthisscenariotheTHS7316incorporatesasync-tipclampcircuit.Thisfunctionrequiresacapacitor(nominally0.1µF)tobeinserieswiththeinput.Notethatwhilethetermsync-tip-clampisusedthroughoutthisdocument,itshouldbenotedthattheTHS7316isbebettertermedasadc-restorationcircuitbasedonhowthisfunctionisperformed.Thiscircuitisanactiveclampcircuitandnotapassivediodeclampfunction.

TheinputtotheTHS7316hasaninternalcontrolloopwhichsetsthelowestinputappliedvoltagetoclampatground(0-V).Bysettingthereferenceat0-V,theTHS7316allowsadc-coupledinputtoalsofunction.Hence,theSTCisconsideredtransparentsinceitdoesnotoperateunlesstheinputsignalgoesbelowground.Thesignalthengoesthroughthesame140-mVlevelshifterresultinginanoutputvoltagelowlevelof280-mV.Iftheinputsignaltriestogobelowthe0-V,theinternalcontrolloopoftheTHS7316willsourceupto3-mAofcurrenttoincreasetheinputvoltagelevelontheTHS7316inputsideofthecouplingcapacitor.Assoonasthevoltagegoesabovethe0-Vlevel,theloopstopssourcingcurrentandbecomeshighimpedance.

Oneoftheconcernsaboutthesync-tip-clamplevelishowtheclampreactstoasyncedgethathasovershoot—commoninVCRsignalsorreflectionsfoundinpoorPCBlayouts.IdeallytheSTCshouldnotreacttotheovershootvoltageoftheinputsignal.Otherwise,thiscouldresultinclippingontherestofthevideosignalasitmayraisethebiasvoltagetoomuch.

Tohelpminimizethisinputsignalovershootproblem,thecontrolloopintheTHS7316hasaninternallow-passfilterasshowninFigure29.ThisfilterreducestheresponsetimeoftheSTCcircuit.Thisdelayisafunctionofhowfarthevoltageisbelowground,butingeneralitisabouta80-nsdelay.Theeffectofthisfilteristoslowdowntheresponseofthecontrolloopsoasnottoclampontheinputovershootvoltage,butrathertheflatportionofthesyncsignal.

Asaresultofthisdelay,thesyncmayhaveanapparentvoltageshift.TheamountofshiftisdependantupontheamountofdroopinthesignalasdictatedbytheinputcapacitorandtheSTCcurrentflow.Becausethesyncisprimarilyfortimingpurposeswithsyncingoccurringontheedgeofthesyncsignal,thisshiftistransparentinmostsystems.

Whilethisfeaturemaynotfullyeliminateovershootissuesontheinputsignalforexcessiveovershootand/orringing,theSTCsystemshouldhelpminimizeimproperclampinglevels.Asanadditionalmethodtohelpminimizethisissue,anexternalcapacitor(ex:10pFto47pF)togroundinparallelwiththeexternalterminationresistorscanhelpfilterovershootproblems.

ItshouldbenotedthatthisSTCsystemisdynamicanddoesnotrelyupontiminginanyway.Itonlydependsonthevoltageappearingattheinputpinatanygivenpointintime.TheSTCfilteringhelpsminimizelevelshiftproblemsassociatedwithswitchingnoisesorveryshortspikesonthesignalline.ThishelpsensureaveryrobustSTCsystem.

+Vs+VsSTC󰀀LPFComparator+InternalCircuitryInputPinInput

0.1mF-+-800kW140󰀀mV󰀀LevelShifterFigure29.EquivalentACSyncTipClampInputCircuit

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APPLICATIONINFORMATION(continued)

WhentheACSync-Tip-Clamp(STC)operationisused,theremustalsobesomefiniteamountofdischargebiascurrent.Aspreviouslydescribed,iftheinputsignalgoesbelowthe0-Vclamplevel,theinternalloopoftheTHS7316willsourcecurrenttoincreasethevoltageappearingattheinputpin.Asthedifferencebetweenthesignallevelandthe0-Vreferencelevelincreases,theamountofsourcecurrentincreasesproportionally—supplyingupto3-mAofcurrent.Thusthetimetore-establishtheproperSTCvoltagecanbefast.Ifthedifferenceissmall,thenthesourcecurrentisalsosmalltoaccountforminorvoltagedroop.

But,whathappensiftheinputsignalgoesabovethe0-Vinputlevel?Theproblemisthevideosignalisalwaysabovethislevel,andmustnotbealteredinanyway.ButiftheSyncleveloftheinputsignalisabovethis0-Vlevel,thentheinternaldischarge(sink)currentwilldischargetheac-coupledbiassignaltotheproper0-Vlevel.Thisdischargecurrentmustnotbelargeenoughtoalterthevideosignalappreciably,orpicturequalityissuesmayarise.Thisisoftenseenbylookingatthetilt(akadroop)ofaconstantlumasignalbeingappliedandlookingattheresultingoutputlevel.Theassociatedchangeinlumalevelfromthebeginningofthevideolinetotheendofthevideolineistheamountoflinetilt(droop).

Ifthedischargecurrentissmall,theamountoftiltislowwhichisgood.But,theamountoftimeforthesystemtocapturethesyncsignalcouldbetoolong.Thisisalsotermedhumrejection.Humarisesfromtheaclinevoltagefrequencyof50-Hzor60-Hz.Thevalueofthedischargecurrentandtheac-couplingcapacitorcombinetodictatethehumrejectionandtheamountoflinetilt.

Toallowforbothdc-couplingandac-couplinginthesamepart,theTHS7316incorporatesan800-kΩresistortoground.Althoughatrueconstantcurrentsinkispreferredoveraresistor,therearesignificantissueswhenthevoltageisnearground.Thiscancausethecurrentsinktransistortosaturateandcausepotentialproblemswiththesignal.Thisresistorislargeenoughastonotimpactadc-coupledDACtermination.Fordischarginganac-coupledsource,Ohm’sLawisused.Ifthevideosignalis1V,thenthereis1V/800kΩ=1.25-µAofdischargecurrent.Ifmorehumrejectionisdesiredorthereisalossofsyncoccurring,thendecreasethe0.1-µFinputcouplingcapacitor.Adecreasefrom0.1µFto0.047µFincreasesthehumrejectionbyafactorof2.1.Alternativelyanexternalpull-downresistortogroundmaybeaddedwhichdecreasestheoverallresistance,andultimatelyincreasesthedischargecurrent.

ToensureproperstabilityoftheACSTCcontrolloop,thesourceimpedancemustbelessthan1-kΩwiththeinputcapacitorinplace.Otherwise,thereisapossibilityofthecontrollooptoringandthisringingmayappearontheoutputoftheTHS7316.BecausemostDACsorencodersuseresistorstoestablishthevoltage,whicharetypicallylessthan300-Ω,thenmeetingthe<1-kΩrequirementisdone.But,ifthesourceimpedancelookingfromtheTHS7316inputperspectiveishigh,thenadda1-kΩresistortoGNDtoensureproperoperationoftheTHS7316.

INPUTMODEOFOPERATION–ACBIAS

Synctipclampsworkwellforsignalsthathavehorizontaland/orverticalsyncsassociatedwiththem.But,somevideosignalsdonothaveasyncembeddedwithinthesignal–suchasChromaortheP’BandP’Rchannelsofa480i/480p/576i/576psignal;orthebottomofthesyncisnotthelowestpossiblelevelofthevideosignal–suchastheP’BandP’Rchannelsofa720pand1080isignal.Ifac-couplingofthesesignalsisdesired,thenadcbiasisrequiredtoproperlysetthedcoperatingpointwithintheTHS7316.ThisfunctioniseasilyaccomplishedwiththeTHS7316byaddinganexternalpull-upresistortothepositivepowersupplyasshowninFigure30.

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3.3󰀀V3.3󰀀VInternalCircuitry3.01󰀀MWInput

CinInputPin800󰀀kW+-140󰀀mV󰀀LevelShifterFigure30.AC-BiasInputModeCircuitConfiguration

Thedcvoltageappearingattheinputpinisapproximatelyequalto:

VDC+VS

800k800k)RPU

Ǔ(1)

TheTHS7316allowableinputrangeisapproximately(+Vs–1.5V)whichallowsforawideinputvoltagerange.Assuch,theinputdc-biaspointisflexiblewiththeoutputdc-biaspointbeingtheprimaryfactor.Forexample,iftheoutputdc-biaspointisdesiredtobe1.65-Vona3.3-Vsupply,thentheinputdc-biaspointshouldbe(1.65V–280mV)/2=0.685V.Thus,thepull-upresistorcalculatestoabout3.01-MΩresultingin0.693V.Iftheinputdc-biaspointisdesiredtobe0.685Vwitha5-Vpowersupply,thenthepull-upresistorcalculatestoabout5.1-MΩ.

Theinternal800-kΩresistorhasapproximatelya±20%variance.Assuch,thecalculationsshouldtakethisintoaccount.Forthe0.693Vexampleaboveusinganideal3.01-MΩresistor,theinputdc-biasvoltageisabout0.693V±0.11V.

Oneotherissuethatmustbetakenintoaccountisthatthedc-biaspointisafunctionofthepowersupply.Assuch,theremaybeanimpactonpowersupplyrejection(PSRR)onthesystem.Tohelpreducetheimpact,theinputcapacitorcombinedwiththepull-upresistancefunctionsasalow-passfilter.Additionally,thetimetochargethecapacitortothefinaldc-biaspointisalsoafunctionofthepull-upresistorandtheinputcapacitor.Lastly,theinputcapacitorformsahigh-passfilterwiththeparallelimpedanceofthepull-upresistorandthe800-kΩresistor.Itisgoodtohavethishighpassfilteratabout3-HztominimizeanypotentialdrooponaP'B,P'R,ornon-syncsignals.A0.1-µFinputcapacitorwitha3.01-MΩpull-upresistorequatestoabouta2.5-Hzhigh-passcornerfrequency.

Thismodeofoperationisrecommendedforusewithchroma(C'),P’B,P'R,U',V',andnon-syncB'and/orR'signals.

OUTPUTMODEOFOPERATION–DCCOUPLED

TheTHS7316incorporatesarail-to-railoutputstagethatcanbeusedtodrivethelinedirectlywithouttheneedforlargeac-couplingcapacitorsasshowninFigure31.Thisoffersthebestlinetiltandfieldtilt(ordroop)performancesincethereisnoac-couplingoccurring.Rememberthatiftheinputisac-coupled,thentheresultingtiltduetotheinputac-couplingisseenontheoutputregardlessoftheoutputcoupling.The80-mAoutputcurrentdrivecapabilityoftheTHS7316wasdesignedtodrivetwovideolinesperchannelsimultaneously–essentiallya75-Ωload–whilekeepingtheoutputdynamicrangeaswideaspossible.

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APPLICATIONINFORMATION(continued)

3.3󰀀V75WDAC/EncoderY’/󰀀G’OutY’/󰀀G’R1P’B/󰀀B’RP’R/󰀀R’R23475WTHS7316CH.1󰀀INCH.2󰀀INCH.3󰀀INVS+CH.1󰀀OUTCH.2󰀀OUTCH.3󰀀OUTGNDHDTV720p/1080iY’P’BP’RG’B’R’VGASVGAXGA8765P’B/󰀀B’Out75W75WP’R/󰀀R’Out0.1mF+75W75W3󰀀V󰀀to󰀀5󰀀V22mFFigure31.TypicalHDTVY'P'BP'R/G'B'R'SystemwithDC-CoupledLineDriving

Oneconcernofdc-couplingisifthelineisterminatedtoground.Iftheac-biasinputconfigurationisused,theoutputoftheTHS7316willhaveadc-biasontheoutput.With2linesterminatedtoground,thiscreatesadc-currentpathtoexistwhichresultsinaslightlydecreasedhighoutputvoltageswingandresultinginanincreaseinpowerdissipationoftheTHS7316.WhiletheTHS7316wasdesignedtooperatewithajunctiontemperatureofupto125°C,caremustbetakentoensurethatthejunctiontemperaturedoesnotexceedthislevelorelselongtermreliabilitycouldsuffer.Althoughthisconfigurationonlyaddslessthen10mWofpowerdissipationperchannel,theoveralllowpowerdissipationoftheTHS7316designminimizespotentialthermalissuesevenwhenusingtheSOICpackageathighambienttemperatures.

Anotherconcernofdccouplingistheblankinglevelvoltageofthevideosignal.TheEIAspecificationdictatesthattheblankinglevelshallbe0V±1V.Whilethereissomequestionastowhetherthisvoltageisattheoutputoftheamplifieroratthereceiver,itisgenerallyregardedtobemeasuredatthereceiversideofasystemastherestofthespecificationvoltagerequirementsaregivenwithdoublyterminatedconnectionspresent.Withtherail-to-railoutputswingcapability,combinedwiththe140-mVinputlevelshift,meetingthisrequirementisaccomplished.Thus,eliminationofthelargeoutputac-couplingcapacitorcanbedonewhilestillmeetingtheEIAspecification.ThiscansavesignificantPCBareaandcosts.

NotethattheTHS7316candrivethelinewithdc-couplingregardlessoftheinputmodeofoperation.Theonlyrequirementistomakesurethevideolinehasproperterminationinserieswiththeoutput–typically75-Ω.ThishelpsisolatecapacitiveloadingeffectsfromtheTHS7316output.Failuretoisolatecapacitiveloadsmayresultininstabilitieswiththeoutputbufferpotentiallycausingringingoroscillationstoappear.ThestraycapacitanceappearingdirectlyattheTHS7316outputpinsshouldbekeptbelow20-pF.

OUTPUTMODEOFOPERATION–ACCOUPLED

Themostcommonmethodofcouplingthevideosignaltothelineiswiththeuseofalargecapacitor.Thiscapacitoristypicallybetween220-µFand1000-µF,although330-µFiscommon.Thisvalueofthiscapacitormustbethislargetominimizethelinetilt(droop)and/orfieldtiltassociatedwithac-couplingasdescribedpreviouslyinthisdocument.AC-couplingisdoneforseveralreasons,butthemostcommonreasonistoensurefullinter-operabilitywiththereceivingvideosystem.Thisensuresthatregardlessofthereferencedcvoltageusedonthetransmitside,thereceivesidewillre-establishthedcreferencevoltagetoitsownrequirements,andmeetsEIAspecifications.

Likethedc-outputmodeofoperation,eachlineshouldhavea75-Ωsourceterminationresistorinserieswiththeac-couplingcapacitor.If2linesaretobedriven,itisbesttohaveeachlineuseitsowncapacitorandresistorratherthansharingthesecomponentsasshowninFigure32.Thishelpsensureline-to-linedcisolationandthepotentialproblemsasstipulatedpreviously.Usingasingle1000-µFcapacitorfor2-linescanbedone,butthereisachanceforinterferencetobecreatedbetweenthetworeceivers.

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Duetotheedgeratesandfrequenciesofoperation,itisrecommended–butnotrequired–toplacea0.1-µFto0.01-µFcapacitorinparallelwiththelarge220-µFto1000-µFcapacitor.Theselargevaluecapacitorsaremostcommonlyaluminumelectrolytic.ThesecapacitorshavesignificantlylargeESR(equivalentseriesresistance),andtheirimpedanceathighfrequenciesislargeduetotheassociatedinductancesinvolvedwiththeleadsandconstruction.Thesmall0.1-µFto0.01-µFcapacitorshelppassthesehighfrequency(>1MHz)signalswithmuchlowerimpedancethanthelargecapacitors.

Althoughitiscommontousethesamecapacitorvaluesforallthevideolines,thefrequencybandwidthofthechromasignalinaS-Videosystemarenotrequiredtogoaslow–orashighofafrequency–asthelumachannels.Thusthecapacitorvaluesofthechromaline(s)canbesmaller–suchas0.1-µF.

330mf+(NoteA)75WY’Out175W330mf(NoteA)75WY’Out23.3󰀀VR3.3󰀀V0.1mF+75W330mf3.3󰀀VTHS7314(NoteA)DAC/EncoderY’R3.3V3.01󰀀MW0.1mF+8765330mf+75WP’BOut113.3󰀀VCH.1󰀀INCH.2󰀀INCH.3󰀀INVS+CH.1󰀀OUTCH.2󰀀OUTCH.3󰀀OUTGNDHDTV720p/1080iY’P’BP’RG’B’R’P’BR3.3V3.01󰀀MW0.1mF23475W(NoteA)75WP’BOut2P’R0.1mF75W330mf(NoteA)75W+P’ROut1+3.3󰀀V22mF75W330mf+(NoteA)75WP’ROut275WA.B.

Duetothehighfrequencycontentofthevideosignal,itisrecommended,butnotrequired,toadda0.1-µFor0.01-µFcapacitorinparallelwiththeselargecapacitors.

CurrentsinkingDAC/Encodershown.Seetheapplicationnotes.

Figure32.Typical480i/576iY'P'BP'RAC-InputSystemDriving2AC-CoupledVideoLines

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APPLICATIONINFORMATION(continued)

LOWPASSFILTER

EachchanneloftheTHS7316incorporatesa5th-OrderLowPassFilter.ThesevideoreconstructionfiltersminimizeDACimagesfrombeingpassedontothevideoreceiver.Dependingonthereceiverdesign,failuretoeliminatetheseDACimagescancausepicturequalityproblemsduetoaliasingoftheADC.AnotherbenefitofthefilteristosmoothoutaberrationsinthesignalwhichsomeDACscanhaveiftheirowninternalfilteringisnotgood.Thishelpswithpicturequalityandhelpsinsurethesignalmeetsvideobandwidthrequirements.

EachfilterintheTHS7316isassociatedwithaButterworthcharacteristic.ThebenefitoftheButterworthresponseisthatthefrequencyresponseisflatwitharelativelysteepinitialattenuationatthecornerfrequency.Theproblemisthatthegroupdelayrisesnearthecornerfrequency.Groupdelayisdefinedasthechangeinphase(radians/second)dividedbyachangeinfrequency.Anincreaseingroupdelaycorrespondstoatimedomainpulseresponsethathasovershootandsomepossibleringingassociatedwiththeovershoot.

Theuseofothertypeoffilters,suchasellipticorchebyshev,arenotrecommendedforvideoapplicationsduetotheirverylargegroupdelayvariationsnearthecornerfrequencyresultinginsignificantovershootandringing.Whiletheseellipticorchebyshevfiltersmayhelpmeetthevideostandardspecificationswithrespecttoamplitudeattenuation,theirgroupdelayisbeyondthestandardspecifications.Coupledwiththefactthatvideocangofromawhitepixeltoablackpixeloverandoveragain,ringingcanoccur.Ringingtypicallycausesadisplaytohaveghostingorfuzzinessappearontheedgesofasharptransition.However,aBesselfilterhasanidealgroupdelayresponse,buttherateofattenuationistypicallytoolowforacceptableimagerejection.ThustheButterworthfilterisarespectablecompromiseforbothattenuationandgroupdelay.

TheTHS7316filtershaveanominalcorner(-3dB)frequencyat36-MHzanda–1dBpassbandtypicallyat31-MHz.This36-MHzfilterisidealforHighDefinition(HD)720pand1080isignals.Forsystemsthatoversamplesignificantly,theTHS7316canalsobeusefulforStandardDefinition(SD)NTSCandPALsignalssuchas480i/576iY'P'BP'R,Y'U'V',andbroadcastG’B’R’(R’G’B’)signals.ItcanalsobeusefulwithEnhancedDefinition(ED)signalsincluding480p/576pY'P'BP'R,Y'U'V',broadcastG’B’R’(R’G’B’)signals,andcomputervideosignals.

The36-MHz-3dBcornerfrequencywasdesignedtoallowamaximallyflatvideosignalwhileachieving30-dBofattenuationat74.25-MHz–acommonsamplingfrequencybetweentheDAC/ADC2ndand3rdNyquistzonesfoundinmanyvideosystems.Thisisimportantbecauseanysignalappearingaroundthisfrequencycanappearinthebasebandduetoaliasingeffectsofananalogtodigitalconverterfoundinareceiver.KeepinmindthatDACimagesdonotstopat74.25MHz,theycontinuearoundthesamplingfrequenciesof148.5MHz,222.75-MHz,297-MHz,etc.BecauseofthesemultipleimagesthatanADCcanfolddownintothebasebandsignal,thelowpassfiltermustalsoeliminatethesehigherorderimages.TheTHS7316hasover50-dBattenuationat148.5-MHz,over50-dBattenuationat222.75-MHz,andabout55-dBattenuationat297-MHz.Attenuationto1-GHzisatleast36-dBwhichmakessurethatimagesdonoteffectthedesiredvideobasebandsignal.

The36-MHzfilterfrequencywaschosentoaccountforprocessvariationsintheTHS7316.Toensuretherequiredvideofrequenciesarenotaffected,thefiltercornerfrequencymustbehighenoughtoallowcomponentvariations.Theotherconsiderationistheattenuationmustbelargeenoughtoensuretheanti-aliasing/reconstructionfilteringisenoughtomeetthesystemdemands.Thus,thefilterfrequencieswerenotarbitrarilyselected.

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APPLICATIONINFORMATION(continued)

BENEFITSOVERPASSIVEFILTERING

Twokeybenefitsofusinganintegratedfiltersystem,suchastheTHS7316,overapassivesystemisPCBareaandfiltervariations.ThesmallSOIC-8packagefor3-videochannelsismuchsmalleroverapassiveRLCnetwork,especiallya5-polepassivenetwork.Addinthefactthatinductorshaveatbest±10%tolerances(normally±15%to±20%iscommon)andcapacitorstypicallyhave±10%tolerances.UsingaMonteCarloanalysisshowsthatthefiltercornerfrequency(–3dB),flatness(–1dB),Qfactor(orpeaking),andchannel-to-channeldelayhaswidevariations.Thiscanleadtopotentialperformanceandqualityissuesinmass-productionenvironments.TheTHS7316solvesmostoftheseproblemsbyusingthecornerfrequencyasessentiallytheonlyvariable.

Oneconcernaboutanactivefilterinanintegratedcircuitisthevariationofthefiltercharacteristicswhentheambienttemperatureandthesubsequentdietemperaturechanges.Tominimizetemperatureeffects,theTHS7316useslowtemperaturecoefficientresistorsandhighquality–lowtemperaturecoefficientcapacitorsfoundintheBiCom-3process.Thefiltershavebeenspecifiedbydesigntoaccountforprocessvariationsandtemperaturevariationstomaintainproperfiltercharacteristics.Thismaintainsalowchannel-to-channeltimedelaywhichisrequiredforpropervideosignalperformance.

AnotherbenefitofaTHS7316overapassiveRLCfilteraretheinputandoutputimpedances.TheinputimpedancepresentedtotheDACvariessignificantlywithapassivenetworkandmaycausevoltagevariationsoverfrequency.TheTHS7316inputimpedanceis800-kΩandonlythe2-pFinputcapacitanceplusthePCBtracecapacitanceimpactingtheinputimpedance.Assuch,thevoltagevariationappearingattheDACoutputisbettercontrolledwiththeTHS7316.

Ontheoutputsideofthefilter,apassivefilterwillagainhaveaimpedancevariationoverfrequency.TheTHS7316isanop-ampwhichapproximatesanidealvoltagesource.Avoltagesourceisdesirablebecausetheoutputimpedanceisverylowandcansourceandsinkcurrent.Toproperlymatchthetransmissionlinecharacteristicimpedanceofavideoline,a75-Ωseriesresistorisplacedontheoutput.Tominimizereflectionsandtomaintainagoodreturnloss,thisoutputimpedancemustmaintaina75-Ωimpedance.ApassivefilterimpedancevariationisnotspecifiedwhiletheTHS7316hasapproximately0.5-Ωofoutputimpedanceat10MHz.Thus,thesystemismatchedbetterwithaTHS7316comparedtoapassivefilter.

OnelastbenefitoftheTHS7316overapassivefilterispowerdissipation.ADACdrivingavideolinemustbeabletodrivea37.5-Ωload-thereceiver75-Ωresistorandthe75-ΩimpedancematchingresistornexttotheDACtomaintainthesourceimpedancerequirement.ThisforcestheDACtodriveatleast1.25-Vpeak(100%SaturationCVBS)/37.5Ω=33.3mA.ADACisacurrentsteeringelementandthisamountofcurrentflowsinternallytotheDACeveniftheoutputis0-V.Thus,powerdissipationintheDACmaybehigh-especiallywhen6-channelsarebeingdriven.UsingtheTHS7316,withahighinputimpedanceandthecapabilitytodriveupto2-videolinesperchannel,canreducetheDACpowerdissipationsignificantly.ThisisbecausetheresistancetheDACisdrivingcanbesubstantiallyincreased.ItiscommontosetthisinaDACbyacurrentsettingresistorontheDAC.Thus,theresistancecanbe300-Ωormore-substantiallyreducingthecurrentdrivedemandsfromtheDACandsavingsubstantialamountofpower.Forexample,a3.3-V6-ChannelDACdissipates660mWjustforthesteeringcurrentcapability(6chx33.3mAx3.3V)ifitneedstodrive37.5-Ωload.Witha300-Ωload,theDACpowerdissipationduetocurrentsteeringcurrentwouldonlybe82.5mW(6chX4.16mAX3.3V).

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THS7316

SLOS521–MARCH2007

EVALUATIONMODULE

ToevaluatetheTHS7316,anevaluationmodule(EVM)isavailable.ThisallowsfortestingoftheTHS7316inmanydifferentsystems.InputsandoutputsincludeRCAconnectorsforconsumergradeinterconnections,orBNCconnectorsforhigherlevellabgradeconnections.SeveralunpopulatedcomponentpadsarefoundontheEVMtoallowfordifferentinputandoutputconfigurationsasdictatedbytheuser.

Figure33showstheschematicoftheTHS7316EVM.Figure34andFigure35showsthetoplayerandbottomlayeroftheEVMwhichincorporatesstandardhigh-speedlayoutpractices.ThebillofmaterialsisshowninTable1assuppliedfromTexasInstruments.

++Figure33.THS7316DEVM

Figure34.TopView

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SLOS521–MARCH2007

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EVALUATIONMODULE(continued)

Figure35.BottomView

BillofMaterials

Table1.THS7316DEVM

ITEM123456789101112

REFDESFB1C16C17,C18,C19

C15C1,C2,C3,C12,

C13,C14

C5C7,C9,C11

C4C6,C8,C10RX1,RX2,RX3,RX4,RX5,RX6R4,R5,R6,R7,R8,R9,Z1,Z2,Z3R1,R2,R3,R10,

R11,R12

QTY113161313696

DESCRIPTION

BEAD,FERRITE,2.5A,330OHMCAP,100µF,TAN,10V,10%,LOESROPEN

CAP,0.1µF,CERAMIC,16V,X7ROPEN

CAP,0.01µF,CERAMIC,100V,X7RCAP,0.1µF,CERAMIC,50V,X7RCAP,1µF,CERAMIC,16V,X7RCAP,ALUM,470µF,10V,20%OPEN

RESISTOR,0OHM

RESISTOR,75OHM,1/8W,1%

SMDSIZE0805C060306030805080508050805F060308050805

(ROHM)MCR10EZHJ000(ROHM)MCR10EZHF75.0

(DIGI-KEY)

RHM0.0ACT-ND(DIGI-KEY)

RHM75.0CCT-ND

(AVX)08051C103KAT2A(AVX)08055C104KAT2A(TDK)C2012X7R1C105K(CORNELL)

AFK477M10F24B

(DIGI-KEY)478-1358-1-ND(DIGI-KEY)478-1395-1-ND(DIGI-KEY)445-1358-1-ND(NEWARK)97C7597

(AVX)0603YC104KAT2A

(GARRETT)

0603YC104KAT2A

MANUFACTURERPART

NUMBER(TDK)MPZ2012S331A(AVX)

TPSC107K010R0100

DISTRIBUTORPART

NUMBER(DIGI-KEY)445-1569-1-ND(DIGI-KEY)478-1765-1-ND

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THS7316

SLOS521–MARCH2007

EVALUATIONMODULE(continued)

Table1.THS7316DEVM(continued)

ITEM131415161718192021

REFDESJ9,J10J1,J2,J3,J6,J7,

J4,J5TP1,TP2,TP3TP4,TP5U1

QTY262321441

DESCRIPTION

JACK,BANANARECEPTANCE,0.25\"DIA.HOLE

CONNECTOR,BNC,JACK,75OHMCONNECTOR,RCA,JACK,R/ATESTPOINT,REDTESTPOINT,BLACKIC,THS7316

STANDOFF,4-40HEX,0.625\"LENGTHSCREW,PHILLIPS,4-40,.250\"BOARD,PRINTEDCIRCUIT

DSMDSIZE

MANUFACTURERPART

NUMBER(SPC)813(AMPHENOL)31-5329-72RFX(CUI)RCJ-32265(KEYSTONE)5000(KEYSTONE)5001(TI)THS7316D(KEYSTONE)1808(BF)PMS4400031PHEDGE#6483761REV.A

(NEWARK)89F1934(DIGI-KEY)H343-NDDISTRIBUTORPART

NUMBER(NEWARK)39N867(NEWARK)93F7554(DIGI-KEY)CP-1446-ND(DIGI-KEY)5000K-ND(DIGI-KEY)5001K-ND

EVALUATIONBOARD/KITIMPORTANTNOTICE

TexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions:

Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Personshandlingtheproduct(s)musthaveelectronicstrainingandobservegoodengineeringpracticestandards.Assuch,thegoodsbeingprovidedarenotintendedtobecompleteintermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations,includingproductsafetyandenvironmentalmeasurestypicallyfoundinendproductsthatincorporatesuchsemiconductorcomponentsorcircuitboards.Thisevaluationboard/kitdoesnotfallwithinthescopeoftheEuropeanUniondirectives

regardingelectromagneticcompatibility,restrictedsubstances(RoHS),recycling(WEEE),FCC,CEorUL,andthereforemaynotmeetthetechnicalrequirementsofthesedirectivesorotherrelateddirectives.

Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,theboard/kitmaybereturnedwithin30daysfromthedateofdeliveryforafullrefund.THEFOREGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYERANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOFMERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE.

Theuserassumesallresponsibilityandliabilityforproperandsafehandlingofthegoods.Further,theuserindemnifiesTIfromallclaimsarisingfromthehandlingoruseofthegoods.Duetotheopenconstructionoftheproduct,itistheuser’sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostaticdischarge.

EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANYINDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES.TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive.

TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsorservicesdescribedherein.

PleasereadtheUser’sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser’sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperaturesandvoltages.ForadditionalinformationonTI’senvironmentaland/orsafetyprograms,pleasecontacttheTIapplicationengineerorvisitwww.ti.com/esh.

NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,orcombinationinwhichsuchTIproductsorservicesmightbeorareused.

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FCCWarning

Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Itgenerates,uses,andcanradiateradiofrequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCrules,whicharedesignedtoprovidereasonableprotectionagainstradiofrequencyinterference.Operationofthisequipmentinother

environmentsmaycauseinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmayberequiredtocorrectthisinterference.

MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265

EVMWARNINGSANDRESTRICTIONS

ItisimportanttooperatethisEVMwithintheinputvoltagerangeof2.85Vto5.5Vsinglesupplyandtheoutputvoltagerangeof0Vto5.5V.

Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/orirreversibledamagetotheEVM.Iftherearequestionsconcerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower.

Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossible

permanentdamagetotheEVM.PleaseconsulttheEVMUser'sGuidepriortoconnectinganyloadtotheEVMoutput.Ifthereisuncertaintyastotheloadspecification,pleasecontactaTIfieldrepresentative.

Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan85°C.TheEVMisdesignedtooperateproperlywithcertaincomponentsabove85°Caslongastheinputandoutputrangesaremaintained.Thesecomponentsincludebutarenotlimitedtolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.ThesetypesofdevicescanbeidentifiedusingtheEVMschematiclocatedintheEVMUser'sGuide.Whenplacingmeasurementprobesnearthesedevicesduringoperation,pleasebeawarethatthesedevicesmaybeverywarmtothetouch.

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improvements,andotherchangestoitsproductsandservicesatanytimeandtodiscontinueanyproductorservicewithoutnotice.Customersshouldobtainthelatestrelevantinformationbeforeplacingordersandshouldverifythatsuchinformationiscurrentandcomplete.AllproductsaresoldsubjecttoTI’stermsandconditionsofsalesuppliedatthetimeoforderacknowledgment.TIwarrantsperformanceofitshardwareproductstothespecificationsapplicableatthetimeofsaleinaccordancewithTI’sstandardwarranty.TestingandotherqualitycontroltechniquesareusedtotheextentTIdeemsnecessarytosupportthiswarranty.Exceptwheremandatedbygovernmentrequirements,testingofallparametersofeachproductisnotnecessarilyperformed.

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TIproductsareneitherdesignednorintendedforuseinmilitary/aerospaceapplicationsorenvironmentsunlesstheTIproductsarespecificallydesignatedbyTIasmilitary-gradeor\"enhancedplastic.\"OnlyproductsdesignatedbyTIasmilitary-grademeetmilitaryspecifications.BuyersacknowledgeandagreethatanysuchuseofTIproductswhichTIhasnotdesignatedasmilitary-gradeissolelyattheBuyer'srisk,andthattheyaresolelyresponsibleforcompliancewithalllegalandregulatoryrequirementsinconnectionwithsuchuse.

TIproductsareneitherdesignednorintendedforuseinautomotiveapplicationsorenvironmentsunlessthespecificTIproductsaredesignatedbyTIascompliantwithISO/TS16949requirements.Buyersacknowledgeandagreethat,iftheyuseanynon-designatedproductsinautomotiveapplications,TIwillnotberesponsibleforanyfailuretomeetsuchrequirements.FollowingareURLswhereyoucanobtaininformationonotherTexasInstrumentsproductsandapplicationsolutions:ProductsAmplifiersDataConvertersDSPInterfaceLogicPowerMgmtMicrocontrollersLowPowerWireless

amplifier.ti.comdataconverter.ti.comdsp.ti.cominterface.ti.comlogic.ti.compower.ti.commicrocontroller.ti.comwww.ti.com/lpw

ApplicationsAudioAutomotiveBroadbandDigitalControlMilitary

OpticalNetworkingSecurityTelephonyVideo&ImagingWireless

www.ti.com/audiowww.ti.com/automotivewww.ti.com/broadbandwww.ti.com/digitalcontrolwww.ti.com/militarywww.ti.com/opticalnetworkwww.ti.com/securitywww.ti.com/telephonywww.ti.com/videowww.ti.com/wirelessMailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265

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PACKAGEOPTIONADDENDUM

www.ti.com

2-Apr-2007

PACKAGINGINFORMATION

OrderableDevice

THS7316DTHS7316DRTHS7316DRG4

(1)

Status(1)ACTIVEACTIVEACTIVE

PackageTypeSOICSOICSOIC

PackageDrawing

DDD

PinsPackageEcoPlan(2)

Qty888

Green(RoHS&noSb/Br)

Lead/BallFinishCUNIPDAUCUNIPDAUCUNIPDAU

MSLPeakTemp(3)Level-2-260C-1YEARLevel-2-260C-1YEARLevel-2-260C-1YEAR

2500Green(RoHS&

noSb/Br)2500Green(RoHS&

noSb/Br)

Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.

LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.

NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.

PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable.OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.

(2)

EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheckhttp://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails.TBD:ThePb-Free/Greenconversionplanhasnotbeendefined.

Pb-Free(RoHS):TI'sterms\"Lead-Free\"or\"Pb-Free\"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirementsforall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesolderedathightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses.

Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieandpackage,or2)lead-baseddieadhesiveusedbetweenthedieandleadframe.ThecomponentisotherwiseconsideredPb-Free(RoHScompatible)asdefinedabove.

Green(RoHS&noSb/Br):TIdefines\"Green\"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflameretardants(BrorSbdonotexceed0.1%byweightinhomogeneousmaterial)

(3)

MSL,PeakTemp.--TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.

ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.Effortsareunderwaytobetterintegrateinformationfromthirdparties.TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.

InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis.

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IMPORTANTNOTICE

TexasInstrumentsIncorporatedanditssubsidiaries(TI)reservetherighttomakecorrections,modifications,enhancements,

amplifier.ti.comdataconverter.ti.comdsp.ti.cominterface.ti.comlogic.ti.compower.ti.commicrocontroller.ti.comwww.ti.com/lpw

ApplicationsAudioAutomotiveBroadbandDigitalControlMilitary

OpticalNetworkingSecurityTelephonyVideo&ImagingWireless

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