3-Ch, Low-Power Video Amp w/I2C Control - Texas Instruments

62 Pages·2015·2.13 MB·English

THS7303
www.ti.com SLOS479B–OCTOBER2005–REVISEDMARCH2011
2
3-Channel, Low-Power Video Amplifier with I C Control, Selectable Filters, 6-dB Gain,
SAG Correction, 2:1 Input MUX, and Selectable Input Bias Modes
CheckforSamples:THS7303
FEATURES APPLICATIONS
1
• 3-VideoAmplifiersforCVBS,S-Video , • SetTopBoxOutputVideoBuffering
234
Y'U'V',SD/ED/HDY'P' P' ,and G'B'R'(R'G'B') • PVR/DVDROutputBuffering
B R
• I2C™ControlofAllFunctions • USB/PortableLowPowerVideoBuffering
• IntegratedLow-PassFilters
DESCRIPTION
– 5th-OrderButterworthCharacteristics
Fabricated using the new complementary
– SelectableCorner Frequenciesof9-MHz, silicon-germanium (SiGe) BiCom-3 process, the
16-MHz,35-MHz,and Bypass(190-MHz) THS7303 is a low-power, single-supply, 2.7-V to 5-V,
• SelectableInputBiasModes 3-channel integrated video buffer. It incorporates a
selectable fifth-order Butterworth filter to eliminate
– AC-CoupledwithSync-Tip-Clamp
data converter images. The 9-MHz filter is a perfect
– AC-CoupledwithBias choice for SDTV video including composite (CVBS),
– DC-Coupledwith135-mVInputShift S-Video, and 480i/576i Y'P' P' , and G'B'R' (R'G'B')
B R
signals. The 16-MHz filter is ideal for EDTV
– DC-Coupled
480p/576p Y'P' P' , G'B'R', and VGA signals. The
B R
• 2:1InputMUX AllowsMultipleInputSources
35-MHz filter is useful for HDTV 720p/1080i Y'P' P' ,
B R
• Built-in6-dBGain(2V/V) G'B'R', and SVGA/XGA signals. For 1080p or
SXGA/UXGA signals, the filter can be bypassed
• SAGCorrectionCapable
allowing a 190-MHz bandwidth, 300-V/μs amplifier to
• 2.7-Vto5-VSingleSupplyOperation
bufferthesignal.
• Low16.6-mA(3.3V)TotalQuiscentCurrent
Each channel of the THS7303 is individually I2C
• IndividualDisable(< 1μA)andMuteControl
configurable for all functions which makes it flexible
• Rail-to-RailOutput: for any application. Its rail-to-rail output stage allows
for both ac and dc coupling applications. The 6-dB
– Output Swingswithin100mV fromthe
gain along with the built-in SAG correction allows for
RailstoAllowACorDCOutputCoupling
maximumflexibilityasanoutput videobuffer.
– SupportsDrivingTwoLinesper Channel
The 16.6-mA total quiescent current (55 mW total
• LowDifferentialGain/Phaseof0.13%/0.55°
power) makes the THS7303 an excellent choice for
USB powered or portable video applications. While
fully disabled, the THS7303 consumes less than 1 μA
makingitidealfor energysensitiveapplications.
3.3 V
Bypass
Video InA
DAC/
Encoder In B 2:1 X1 + Out 47mF
LPF Video
R 9 / 16 / - 75W Out
AC 35-MHz 675W
DC Sync SAG
135 mV DC TIP
External AC- Clamp MUTE 1 kW 878W 150W 33mF 75W
Input BIAS
75W
SDA SCL I2C-A1 I2C-A0 3.3 V
Figure1. 3.3-V,Single-Supply, DC-Input/AC-VideoOutputSystemwithSAG Correction
(1of3ChannelsShown)
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
WindowsisaregisteredtrademarkofMicrosoftCorporation.
2I2CisatrademarkofNXPSemiconductors.
3
Allothertrademarksarethepropertyoftheirrespectiveowners.
4
PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©2005–2011,TexasInstrumentsIncorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarilyincludetestingofallparameters.
THS7303
SLOS479B–OCTOBER2005–REVISEDMARCH2011 www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.
ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemore
susceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.
DESCRIPTION (CONTINUED)
As part of the THS7303 flexibility, the 2:1 MUX input can be selected for ac- or dc-coupled inputs. The
ac-coupled modes include a sync-tip-clamp option for CVBS/Y'/G'/B'/R' with sync or a fixed bias for the C'/P' /P'
B R
non-sync channels. The dc input options include a dc input or a (dc + 135-mV) input offset shift to allow for a full
syncdynamicrangeattheoutputwith0-V input.
PACKAGE/ORDERINGINFORMATION(1)
PRODUCT PACKAGE-LEAD PACKAGEDESIGNATOR TRANSPORTMEDIA,QUANTITY
THS7303PW Rails,70
TSSOP-20 PW
THS7303PWR TapeandReel,2000
(1) Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
Websiteatwww.ti.com.
ABSOLUTE MAXIMUM RATINGS
Overoperatingfree-airtemperaturerange(unlessotherwisenoted).(1)
PARAMETER UNIT
VSS Supplyvoltage,VS+toGND 5.5V
VI Inputvoltage –0.4VtoVS+
IO Outputcurrent ±125mA
Continuouspowerdissipation SeeDissipationRatingsTable
TJ Maximumjunctiontemperature,anycondition(2) +150°C
TJ Maximumjunctiontemperature,continuousoperation,longtermreliability(3) +125°C
Tstg Storagetemperaturerange –65°Cto+150°C
Leadtemperature1,6mm(1/16inch)fromcasefor10seconds +300°C
HBM 2000V
ESDratings CDM 750V
MM 100V
(1) Stressesabovethoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratings
onlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperating
conditionsisnotimpliedExposuretoabsolutemaximumratedconditionsforextendedperiodsmaydegradedevicereliability.
(2) Theabsolutemaximumjunctiontemperatureunderanyconditionislimitedbytheconstraintsofthesiliconprocess.
(3) Theabsolutemaximumjunctiontemperatureforcontinuousoperationislimitedbythepackageconstraints.Operationabovethis
temperaturemayresultinreducedreliabilityand/orlifetimeofthedevice.
DISSIPATION RATINGS
POWERRATING(1)
θJC θJA (TJ=+125°C)
PACKAGE (°C/W) (°C/W) TA=+25°C TA=+85°C
TSSOP-20(PW) 32.3 83(2) 1.2W 0.48W
RECOMMENDED OPERATING CONDITIONS
PARAMETER MIN NOM MAX UNIT
VSS Supplyvoltage,VS+ 2.7 5 V
TA Ambienttemperature –40 +85 °C
(1) Powerratingisdeterminedwithajunctiontemperatureof+125°C.Thisisthepointwheredistortionstartstosubstantiallyincreaseand
long-termreliabilitystartstobereduced.ThermalmanagementofthefinalPCBshouldstrivetokeepthejunctiontemperatureator
below+125°Cforbestperformanceandreliability.
(2) ThisdatawastakenwiththeJEDECHigh-KtestPCB.FortheJEDEClow-KtestPCB,theθ is+125.8°C.
JA
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ELECTRICAL CHARACTERISTICS: V = 3.3 V
S+
R =150ΩtoGND,filterselect=9MHz,inputbias=dc,andSAGpinshortedtotheoutputpin(unlessotherwisenoted).
L
TYP OVERTEMPERATURE
PARAMETER TESTCONDITIONS +25°C +25°C 0°Cto+70°C –40°Cto+85°C UNITS MIN/MAX
ACPERFORMANCE
FilterSelect=9MHz(1) 9 7.6/10.4 7.4/10.6 7.3/10.7 MHz Min/Max
Small-signalbandwidth Filterselect=16MHz(1) 16 13.4/18.6 13.1/18.9 13/19 MHz Min/Max
(–3dB)VO–0.2VPP Filterselect=35MHz(1) 35 29.4/40.6 29.1/40.9 29/41 MHz Min/Max
Filterselect=bypass 175 MHz
Filterselect=9MHz 9 MHz
Large-signalbandwidth Filterselect=16MHz 16 MHz
(–3dB)VO–2VPP Filterselect=35MHz 35 MHz
Filterselect=bypass 83 MHz
Slewrate Filterselect=bypass,VO=2VPP 300 V/μs
Filterselect=9MHz 54 ns
Filterselect=16MHz 31.5 ns
Groupdelayat100kHz
Filterselect=35MHz 17 ns
Filterselect=bypass 3 ns
Filterselect=9MHz,at5.1MHz 10.5 ns
Groupdelayvariationwith
Filterselect=16MHz,at11MHz 8 ns
respectto100kHz
Filterselect=35MHz,at27MHz 4.8 ns
Groupdelaymatching Allfilters:channel-to-channel 0.5 ns
Filterselect=9MHz,at5.75MHz 0.2 -0.3/0.9 -0.5/1.1 -0.6/1.2 dB Min/Max
Filterselect=9MHz,at27MHz 43 33 32 31 dB Min
Attenuationwithrespectto Filterselect=16MHz,at11MHz 0.25 -0.3/0.9 -0.5/1.1 -0.6/1.2 dB Min/Max
100kHz Filterselect=16MHz,at54MHz 44 33 32 31 dB Min
Filterselect=35MHz,at27MHz 0.7 -0.3/2.7 -0.5/2.8 -0.6/2.9 dB Min/Max
Filterselect=35MHz,at74MHz 28 15 14 13 dB Min
Mutefeedthrough Filterselect=bypass,at30MHz -73 dB
Differentialgain Filterselect=9MHz,NTSC/PAL 0.13/0.27 %
Differentialphase Filterselect=9MHz,NTSC/PAL 0.55/0.65 °
Filterselect=9MHz –59 dB
Totalharmonicdistortion Filterselect=16MHz –62 dB
f=1MHz,2VPP Filterselect=35MHz –58 dB
Filterselect=bypass –60 dB
Filterselect=9MHz,480isource 84 dB
Signal-to-noiseratio(unified Filterselect=16MHz,480psource 82 dB
weightingperCCIR576-2
recommendation) Filterselect=35MHz,720psource 79 dB
Filterselect=bypass(2),720psource 67 dB
Filterselect=9MHz,at1MHz –65 dB
Channel-to-channelcrosstalk Filterselect=16MHz,at1MHz –67 dB
(VO=2VPP) Filterselect=35MHz,at1MHz –69 dB
Filterselect=bypass,at1MHz –70 dB
Filterselect=9MHz,at5.1MHz 70 dB
Filterselect=16MHz,at11MHz 69 dB
MUXisolation
Filterselect=35MHz,at27MHz 69 dB
Filterselect=bypass,at60MHz 73 dB
ACgain:allchannels f=100kHz 6 5.7/6.3 5.65/6.35 5.65/6.35 dB Min/Max
Outputimpedance f=10MHz 0.7 Ω
(1) Min/Maxvalueslistedarespecifiedbydesignonly.PCBcapacitanceaffectsthefiltercharacteristics,especiallythe35-MHzandbypass
moderesponses.
(2) Bandwidthupto100-MHz,noweighting,tiltnull.
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ELECTRICAL CHARACTERISTICS: V = 3.3 V (continued)
S+
R =150ΩtoGND,filterselect=9MHz,inputbias=dc,andSAGpinshortedtotheoutputpin(unlessotherwisenoted).
L
TYP OVERTEMPERATURE
PARAMETER TESTCONDITIONS +25°C +25°C 0°Cto+70°C –40°Cto+85°C UNITS MIN/MAX
DCPERFORMANCE
Outputoffsetvoltage Bias=dc 35 90 95 95 mV Max
Averageoffsetvoltagedrift Bias=dc 20 μV/°C
Bias=dc+135mV,VI=0V 290 235/345 215/360 200/375 mV Min/Max
Biasoutputvoltage
Bias=ac 1.65 1.5/1.8 1.45/1.85 1.45/1.85 V Min/Max
Sync-tip-clampoutputvoltage Bias=acSTC 290 210/370 200/380 195/385 mV Min/Max
Inputbiascurrent Bias=dc,impliesIBoutofthepin –0.6 –4 –5 –5 μA Max
Averagebiascurrentdrift Bias=dc 10 nA/°C
Bias=acSTC,lowbias 1.8 0.6/3.3 0.5/3.5 0.4/3.6 μA Min/Max
Sync-tip-clampbiascurrent Bias=acSTC,midbias 5.8 4.3/8.2 4.1/8.4 4/8.5 μA Min/Max
Bias=acSTC,highbias 7.8 6.2/10.8 6/11 5.9/11.1 μA Min/Max
INPUTCHARACTERISTICS
Inputvoltagerange Bias=dc,limitedbyoutput 0/1.57 0/1.52 0/1.47 0/1.47 V Min/Max
Bias=acbiasmode 19 kΩ
Inputresistance
Bias=dc,dc+135mV,acSTC 3 MΩ
Inputcapacitance 2 pF
OUTPUTCHARACTERISTICS
RL=150Ωto+1.65V 3.15 2.9 2.8 2.8 V Min
RL=150ΩtoGND 3.05 2.85 2.75 2.75 V Min
Highoutputvoltageswing
RL=75Ωto+1.65V 3.05 2.8 2.7 2.7 V Min
RL=75ΩtoGND 2.9 2.65 2.55 2.55 V Min
RL=150Ωto+1.65V 0.14 0.24 0.27 0.28 V Max
RL=150ΩtoGND 0.09 0.17 0.2 0.21 V Max
Lowoutputvoltageswing
RL=75ΩtoGND 0.24 0.33 0.36 0.37 V Max
RL=75ΩtoGND 0.09 0.17 0.2 0.21 V Max
RL=10Ωto+1.65V,sourcing 70 45 42 40 mA Min
Outputcurrent
RL=10Ωto+1.65V,sinking 70 45 42 40 mA Min
POWERSUPPLY
Maximumoperatingvoltage 3.3 5.5 5.5 5.5 V Max
Minimumoperatingvoltage 3.3 2.6 2.6 2.6 V Min
Maximumquiescentcurrent PerchannelVI=200mV 6 7.2 7.4 7.5 mA Max
Minimumquiescentcurrent PerchannelVI=200mV 6 4.8 4.6 4.5 mA Min
Totalquiescentcurrent Allchannelson,VI=200mV(3) 16.6 mA
Power-supplyrejection
(+PSRR) VS+=3.5Vto3.1V 62 37 35 35 dB Min
DISABLECHARACTERISTICS
Quiescentcurrent All3channelsdisabled(4) 0.1 μA
Turn-ontimedelay(tON) Timereaches50%offinalvalueafter 5 μs
I2Ccontroliscompleted
Turn-ontimedelay(tOFF) 2 μs
DIGITALCHARACTERISTICS
High-levelinputvoltagexxx 2.3 V Typ
VIH
Low-levelinputvoltagexxx 1.0 V Typ
VIL
(3) Duetosharingofinternalbiascircuitry,thequiescentcurrent(withallchannelsoperating)islessthanthesingleindividualchannel
quiescentcurrentsaddedtogether.
(4) NotethattheI2CcircuitryisstillactivewhileinDisablemode.ThecurrentshowniswhilethereisnoactivitywiththedeviceI2Ccircuitry.
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ELECTRICAL CHARACTERISTICS: V = 5 V
S+
R =150ΩtoGND,filterselect=9MHz,inputbias=dc,andSAGpinshortedtotheoutputpin(unlessotherwisenoted).
L
TYP OVERTEMPERATURE
PARAMETER TESTCONDITIONS +25°C +25°C 0°Cto+70°C –40°Cto+85°C UNITS MIN/MAX
ACPERFORMANCE
Filterselect=9MHz(1) 9 7.6/10.4 7.4/10.6 7.3/10.7 MHz Min/Max
Small-signalbandwidth Filterselect=16MHz(1) 16 13.4/18.6 13.1/18.9 13/19 MHz Min/Max
(–3dB)VO–0.1VPP Filterselect=35MHz(1) 35 29.4/40.6 29.1/40.9 29/41 MHz Min/Max
Filterselect=bypass 190 MHz
Filterselect=9MHz 9 MHz
Large-signalbandwidth Filterselect=16MHz 16 MHz
(–3dB)VO–2VPP Filterselect=35MHz 35 MHz
Filterselect=bypass 90 MHz
Slewrate Filterselect=bypass 320 V/μs
Filterselect=9MHz 53 ns
Filterselect=16MHz 31 ns
Groupdelayat100kHz
Filterselect=35MHz 16.5 ns
Filterselect=bypass 2.9 ns
Filterselect=9MHz,at5.1MHz 10.5 ns
Groupdelayvariationwith
Filterselect=16MHz,at11MHz 7.5 ns
respectto100kHz
Filterselect=35MHz,at27MHz 4.5 ns
Groupdelaymatching Allfilters:channel-to-channel 0.5 ns
Filterselect=9MHz,at5.75MHz 0.2 -0.3/0.9 -0.5/1.1 -0.6/1.2 dB Min/Max
Filterselect=9MHz,at27MHz 42 33 32 31 dB Min
Attenuationwithrespectto Filterselect=16MHz,at11MHz 0.25 -0.3/0.9 -0.5/1.1 -0.6/1.2 dB Min/Max
100kHz Filterselect=16MHz,at54MHz 44 33 32 31 dB Min
Filterselect=35MHz,at27MHz 0.7 -0.3/2.7 -0.5/2.8 -0.6/2.9 dB Min/Max
Filterselect=35MHz,at74MHz 28 15 14 13 dB Min
Mutefeedthrough Filterselect=bypass,at30MHz 73 dB
Differentialgain Filterselect=9MHz,NTSC/PAL 0.2/0.35 %
Differentialphase Filterselect=9MHz,NTSC/PAL 0.73/0.86 °
Filterselect=9MHz –61 dB
Totalharmonicdistortion Filterselect=16MHz –66 dB
f=1MHz,2VPP Filterselect=35MHz –66 dB
Filterselect=bypass –67 dB
Filterselect=9MHz,480isource 84 dB
Signal-to-noiseratio(unified Filterselect=16MHz,480psource 82 dB
weightingperCCIR576-2
recommendation) Filterselect=35MHz,720psource 79 dB
Filterselect=bypass(2),720psource 67 dB
Filterselect=9MHz:at1MHz –65 dB
Filterselect=16MHz:at1MHz –67 dB
Channel-to-channelcrosstalk
Filterselect=35MHz:at1MHz –69 dB
Filterselect=bypass:at1MHz –70 dB
Filterselect=9MHz:at5.1MHz 70 dB
Filterselect=16MHz:at11MHz 69 dB
MUXisolation
Filterselect=35MHz:at27MHz 71 dB
Filterselect=bypass:at60MHz 68 dB
ACgain:allchannels f=100kHz 6 5.7/6.3 5.65/6.35 5.65/6.35 dB Min/Max
Outputimpedance f=10MHz 0.7 Ω
(1) Min/Maxvalueslistedarespecifiedbydesignonly.PCBcapacitanceaffectsthefiltercharacteristics,especiallythe35-MHzandbypass
moderesponses.
(2) Bandwidthupto100-MHz,noweighting,tiltnull.
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ELECTRICAL CHARACTERISTICS: V = 5 V (continued)
S+
R =150ΩtoGND,filterselect=9MHz,inputbias=dc,andSAGpinshortedtotheoutputpin(unlessotherwisenoted).
L
TYP OVERTEMPERATURE
PARAMETER TESTCONDITIONS +25°C +25°C 0°Cto+70°C –40°Cto+85°C UNITS MIN/MAX
DCPERFORMANCE
Outputoffsetvoltage Bias=dc 30 90 95 95 mV Max
Averageoffsetvoltagedrift Bias=dc 20 μV/°C
Bias=dc+135mV,VI=0V 290 235/345 215/360 200/375 mV Min/Max
Biasoutputvoltage
Bias=ac 2.5 2.3/2.7 2.25/2.75 2.25/2.75 V Min/Max
Sync-tip-clampoutputvoltage Bias=acSTC 300 230/375 215/385 210/390 mV Min/Max
Inputbiascurrent Bias=dc,impliesIBoutofthepin –0.6 –4 –5 –5 μA Max
Averagebiascurrentdrift Bias=dc 10 nA/°C
Bias=acSTC,lowbias 1.9 0.6/3.3 0.5/3.5 0.4/3.6 μA Min/Max
Sync-tip-clampbiascurrent Bias=acSTC,midbias 6 4.3/8.2 4.1/8.4 4/8.5 μA Min/Max
Bias=acSTC,highbias 8.2 6.2/10.8 6/11 5.9/11.1 μA Min/Max
INPUTCHARACTERISTICS
Inputvoltagerange Bias=dc,limitedbyoutput 0/2.4 0/2.35 0/2.3 0/2.3 V Min/Max
Bias=acbiasmode 19 kΩ
Inputresistance
Bias=dc,dc+135mV,acSTC 3 MΩ
Inputcapacitance 2 pF
OUTPUTCHARACTERISTICS
RL=150Ωto+2.5V 4.8 4.4 4.3 4.3 V Min
RL=150ΩtoGND 4.65 4.2 4.1 4.1 V Min
Highoutputvoltageswing
RL=75Ωto+2.5V 4.7 4.3 4.2 4.2 V Min
RL=75ΩtoGND 4.4 4.1 4 4 V Min
RL=150Ωto+2.5V 0.2 0.34 0.37 0.37 V Max
RL=150ΩtoGND 0.1 0.23 0.26 0.27 V Max
Lowoutputvoltageswing
RL=75ΩtoGND 0.35 0.46 0.5 0.5 V Max
RL=75ΩtoGND 0.1 0.23 0.26 0.27 V Max
RL=10Ωto+2.5V,sourcing 85 60 57 55 mA Min
Outputcurrent
RL=10Ωto+2.5V,sinking 85 60 57 55 mA Min
POWERSUPPLY
Maximumoperatingvoltage 5 5.5 5.5 5.5 V Max
Minimumoperatingvoltage 5 2.6 2.6 2.6 V Min
Maximumquiescentcurrent PerchannelVI=200mV 6.6 7.9 8.1 8.2 mA Max
Minimumquiescentcurrent PerchannelVI=200mV 6.6 5.3 5.1 5 mA Min
Totalquiescentcurrent Allchannelson,VI=200mV(3) 18.9 mA
Power-supplyrejection
(+PSRR) VS+=5.2Vto4.8V 66 38 36 36 dB Min
DISABLECHARACTERISTICS
Quiescentcurrent All3channelsdisabled(4) 0.5 μA
Turn-ontimedelay(tON) Timereaches50%offinalvalueafter 5 μs
I2Ccontroliscompleted
Turn-ontimedelay(tOFF) 2 μs
DIGITALCHARACTERISTICS
High-levelinputvoltagexxx 3.5 V Typ
VIH
Low-levelinputvoltagexxx 1.5 V Typ
VIL
(3) Duetosharingofinternalbiascircuitry,thequiescentcurrent(withallchannelsoperating)islessthanthesingleindividualchannel
quiescentcurrentsaddedtogether.
(4) NotethattheI2CcircuitryisstillactivewhileinDisablemode.ThecurrentshowniswhilethereisnoactivitywiththedeviceI2Ccircuitry.
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TIMING REQUIREMENTS(1)
AtV =2.7Vto5V,unlessotherwisenoted.
S+
STANDARDMODE FASTMODE
PARAMETER MIN MAX MIN MAX UNIT
f Clockfrequency,SCL 0 100 0 400 kHz
SCL
t Pulseduration,SCLhigh 4 0.6 μs
w(H)
t Pulseduration,SCLlow 4.7 1.3 μs
w(L)
t Risetime,SCLandSDA 1000 300 ns
r
t Falltime,SCLandSDA 300 300 ns
f
t Setuptime,SDAtoSCL 250 100 ns
su(1)
t Holdtime,SCLtoSDA 0 0 ns
h(1)
t Busfreetimebetweenstopandstartconditions 4.7 1.3 μs
(buf)
t Setuptime,SCLtostartcondition 4.7 0.6 μs
su(2)
t Holdtime,startconditiontoSCL 4 0.6 μs
h(2)
t Setuptime,SCLtostopcondition 4 0.6 μs
su(3)
C Capacitiveloadforeachbusline 400 400 pF
b
(1) TheTHS7303I2Caddress=01011(A1)(A0)(R/W).SeetheApplicationInformationsectionformoreinformation.
tw(H) tw(L) tr tf
SCL
tsu(1) th(1)
SDA
Figure2. SCLandSDATiming
SCL
tsu(2) th(2) tsu(3) t(buf)
SDA
Start Condition Stop Condition
Figure3. StartandStopConditions
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FUNCTIONAL BLOCK DIAGRAM
Bypass
Channel1
Input A 2:1 X1 +
LPF Channel1
Channel2 9 / 16 / - Output
Input A AC 35-MHz 675W
DC Sync Channel1
Channel3 135 mV DC TIP
Input A AC- Clamp MUTE 1 kW 878W 150W SAG
BIAS Bypass
2:1 X1 +
LPF Channel2
9 / 16 / - Output
AC 35-MHz 675W
DC Sync Channel2
135 mV DC TIP
Channel1 Clamp MUTE 1 kW 878W 150W SAG
Input B AC-
BIAS Bypass
Channel2
Input B
2:1 X1 +
Channel3 LPF Channel3
Input B 9 / 16 / - Output
AC 35-MHz 675W
DC Sync
135 mV DC TIP Channel3
Clamp MUTE 1 kW 878W 150W SAG
AC-
BIAS
I2C- I2C-
SDA SCL
A1 A0 Vs+
NOTE: TheI2CaddressoftheTHS7303is01011(A1)(A0)(R/W).
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PIN CONFIGURATION
PWPACKAGE
TSSOP-20
(TOPVIEW)
PINDESCRIPTIONS
PIN
NAME NO. DESCRIPTION
N/C 1,20 Nointernalconnection.Itisrecommended,butnotrequired,toconnectthesepinstoGND.
CH.1–INPUTA 2 Videoinputchannel1,inputA
CH.2–INPUTA 3 Videoinputchannel2,inputA
CH.3–INPUTA 4 Videoinputchannel3,inputA
CH.1–INPUTB 5 Videoinputchannel1,inputB
CH.2–INPUTB 6 Videoinputchannel2,inputB
CH.3–INPUTB 7 Videoinputchannel3,inputB
I2C-A1 8 I2CslaveaddresscontrolbitA1.ConnecttoV foralogic1presetvalueorGNDforalogic0presetvalue.
S+
I2C-A0 9 I2CslaveaddresscontrolbitA0.ConnecttoV foralogic1presetvalueorGNDforalogic0presetvalue.
S+
GND 10 Groundreferencepinforallinternalcircuitry.
V 11 Positivepower-supplyinputpin.Connectto2.7Vto5V.
S+
SerialdatalineoftheI2Cbus.Pull-upresistorshouldhaveaminimumvalueof2kΩandamaximum
SDA 12
valueof19kΩ.PulluptoV .
S+
I2Cbusclockline.Pull-upresistorshouldhaveaminimumvalueof2kΩandamaximumvalueof19kΩ.
SCL 13
PulluptoV .
S+
CH.3–SAG 14 Videooutputchannel3SAGcorrectionpin.IfSAGisnotused,connectdirectlytoCH.3–OUTPUTpin.
CH.3–OUTPUT 15 Videooutputchannel3fromeitherCH.3–INPUTAorCH.3–INPUTB.
CH.2–SAG 16 Videooutputchannel2SAGcorrectionpin.IfSAGisnotused,connectdirectlytoCH.2–OUTPUTpin.
CH.2–OUTPUT 17 Videooutputchannel2fromeitherCH.2–INPUTAorCH.2–INPUTB.
CH.1–SAG 18 Videooutputchannel1SAGcorrectionpin.IfSAGisnotused,connectdirectlytoCH.1–OUTPUTpin.
CH.1–OUTPUT 19 Videooutputchannel1fromeitherCH.1–INPUTAorCH.1–INPUTB.
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TYPICAL CHARACTERISTICS
R =150ΩtoGNDanddc-coupledinputandoutput,unlessotherwisenoted.
L
TOTALQUIESCENTCURRENT INPUTBIASCURRENT
vs vs
SUPPLYVOLTAGE SUPPLYVOLTAGE
20 9
All Channels ON STC − High Bias
8
70°C
mA 19 A 7 STC − Mid Bias
− m− 6
Quiescent Current 1178 25°C 85°C 0°C nput Bias Current 2345 STC − Low Bias TA = 25°C
I−q 16 −40°C I− IIB 1
0 DC − Input Bias
−1
15 −2
2.6 3 3.4 3.8 4.2 4.6 5 2.6 3 3.4 3.8 4.2 4.6 5
VS−Supply Voltage−V VS − Supply Voltage − V
Figure4. Figure5.
MUTEFEEDTHROUGH CROSSTALK
vs vs
FREQUENCY FREQUENCY
−40 −20
VS= 3.3 V and 5 V
−50 VRSL== 135.30 VW a||n 1d3 5 p VF −30 WCRreoofressrstr teCadlak stoe Input Filter = Bypass
RL= 150W
Filter = 35 MHz
B −40
d
− −60 Filter = 35 MHz
ugh Filter = 16 MHz dB −50 Filter = 16 MHz
e Feed Thro −−8700 Filter = 9 MHz Crosstalk− −60 Filter = 9 MHz
Mut −70
−90 −80
Filter = Bypass
−100 −90
0.1 1 10 100 1000 0.1 1 10 100 1000
f−Frequency−MHz f−Frequency−MHz
Figure6. Figure7.
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