Amplifier and Data Converter Selection Guide (Rev. B

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20 Amplifiers➔Video AmplifiersVideo amplifiers—can be used in a numberof different ways, but generally are in thesignal path for amplifying, buffering, filtering ordriving video lines. The specifications of mostinterest for composite video signals, or CVBS,are differential gain and differential phase. Forother video signals, such as Y’P’bP’r or RGB,bandwidth – both small signal and largesignal, and slew rate are of most importance.Noise and DC accuracy is also consideredimportant in some high-end applications.The traditional Voltage-Feedback (VFB) amplifiersare widely used because of their ability tobe configured for almost any situation. ManyVFB amplifiers have the ability to accept inputsignals going to the negative rail (or ground),allowing use in many single-supply systems.Additionally, many VFB amplifiers offer rail-torailoutputs offering the widest dynamic rangepossible on small supplies. Traditional VFBamplifiers (non-RRO) designed for video offerthe ability to have very high slew rates, widebandwidths, low noise, and very good DCcharacteristics. Current-feedback amps arecommonly found in high-end video applications,because of their combination of high slew rateand excellent output drive at lowquiescent power.High-Speed Video Multiplexers—Numerous video applications, such as RGB orYPbPr video switching, video routers, highresolution monitors, etc. are creating anincreased need for high-speed switching withmultiplexers (muxes). With the increased needto reduce board space are also the demandsthat these muxes provide low powerconsumption as well as increased functionality,such as the ability to drive 75-Ohms or150-Ohms while maintaining good videoperformance specifications. Thesespecifications include low crosstalk, fastsettling, gain flatness, low switching glitchalong with low differential gain and differentialphase. The new OPA875 and OPA3875 singleandtriple 2:1 multiplexers along with the newOPA4872, 4:1 multiplexer easily meets theserequirements. Using a new patented inputstage switching approach, the switching glitchis much improved over earlier solutions. Thistechnique uses current steering as the inputswitch while maintaining an overall closedloopdesign.TI brought new technology to the market withthe introduction of the THS7303, THS7313 andTHS7353. These three-channel devices werethe first to offer full I 2 C programmability of allfunctions independently for each channel,which provides the designer the flexibility toconfigure a video system as required or on-thefly,without the need for hardware upgrades ormodifications. The devices are designed withintegrated Butterworth filters to provide all theanalog signal conditioning required in videoapplications such as set-top boxes, digitaltelevisions, personal video recorders/DVDreaders and portable USB devices. These highlyintegrated devices provide space savings as aresult of the high levels of integration andadvanced package technology.The strong combination of integrated featuresand optimized design make TI’s THS7327 andnew THS7347, well suited for use in projectorsand professional video systems. Both3-channel RGBHV video buffers offer a monitorpass-thru amplifier, unity gain buffer, 2:1 inputmux, I 2 C control of all functions on eachchannel, HV synch paths with AdjustableSchmitt Trigger, selectable bias modes andrail-to-rail output that swings within 100mV ofthe rails to allow for either AC or DC-coupling.The THS7347 incorporates a 500MHz bandwidth,1200V/µs unity-gain buffer making itideal for driving ADCs and video decoders,where the THS7327 offers an integrated 5thorder Butterworth anti-aliasing filter on eachchannel. These filters improve image qualityby eliminating DAC images.Portable Video— Successfully designing ahigh-performance video system into lowvoltage portable applications requires carefulattention to many details. Portableapplications impose very challenging technicalrequirements beyond those required in typicalvideo applications and demand particulartrade-offs in performance, power consumption,printed circuit board space and cost. A DCcoupledsolution with integrated gain,low-pass filter, level-shifter, and shutdownsolves these challenges while maintaininggood video performance and eliminates theneed for large, expensive discrete components.The standard definition (SDTV) THS7314 andhigh definition (HDTV) THS7316 easily meetthese trade-offs by maintaining outstandinglow-cost performance while the EDTV/SDTVline driver THS7318, with it’s small profilewafer scale package, is ideal for extremelyboard space sensitive applications.The new low power THS7315 is a fullyintegratedSDTV video amplifier which featuresa rail-to-rail output stage allowing for both ACand DC line driving. The low 15.6mA quiescentcurrent at 3.3V makes it an excellent choice forUSB powered or other power sensitive videoapplications.Video AmplifiersVoltage FeedbackCurrent Feedback Filtered Amplifiers Special FunctionsOPAy354 (2.5V to 5.5V)OPAy355 (2.5V to 5.5V)OPAy356 (2.5V to 5.5V)OPAy357 (2.5V to 5.5V)THS4281 (2.7, ±7.5V)OPAy358 (2.7V to 3.3V)OPA360 (2.7V to 3.3V)OPA361 (2.7V to 3.3V)OPAy830 (2.8V, ±5.0)OPAy832 (2.8V, ±5)OPAy690 (5V, ±5V)OPA842 (5V, ±5V)OPAy820 (5V, ±5V)OPAy694 (±5V)OPAy691 (5V, ±5V)OPAy684 (5V, ±5V)OPAy683 (5V, ±5V)OPAy692 (5V, ±5V)OPAy693 (5V, ±5V)OPAy695 (5V, ±5V)OPA360 (2.7V to 3.3V)OPA361 (2.5V to 3.3V)THS7303 (2.7V to 5.5V)THS7313 (2.7V to 5.5V)THS7353 (2.7V to 5.5V)THS7327 (2.7V to 5.5V)THS7314 (2.85V to 5.5V)THS7315 (2.85V to 5.5V)THS7316 (2.85V to 5.5V)THS7318 (2.85V to 5V)THS7347 (2.7V to 5.5V)OPA615 (±5V)BUF602 (±5V, +5V, +3.3V)OPA861 (±5V)OPAy875 (±5V)OPA4872 (±5V)New devices appear in RED.Amplifier and Data Converter Selection Guide Texas Instruments 3Q 2007
3-Channel RGBHV Video Buffer with I 2 C ControlTHS7327Get samples, datasheets and evaluation modules at: www.ti.com/sc/device/THS7327AmplifiersVideo Amplifiers21➔Key Features• Three video amplifiers for CVBS, S-Video,EDTV, HDTV and RGB• HV sync paths with adjustableSchmitt Trigger• 2:1 input MUX• I 2 C control of all functions/all channels• Integrated low-pass filters on ADCbuffer path• Selectable input bias modes• Monitor pass-through functionApplications• Projectors• Digital TVs• Professional video systems• Set-top boxes• DLP ® projectors/televisionsThe THS7327 integrates three analog video channels and two digital channels for HV sync,simplifying system design and reducing component count. The three analog channelsincorporate unity gain buffering and monitor feed-through paths to handle all standard videoformats, including RGB, YPbPr and CVBS. The amplifier’s I 2 C control provides easy systemconfiguration and flexibility with programmable functions that include: integrated 2:1 inputmultiplexers which enable switching of multiple video sources; fifth-order anti-aliasing filtersenable use with multiple video standards; and input bias modes.Input 1Input 2THS73270.1µFIn AIn B75Ω0.1µF75Ω2:1DC+ Offset DCSDAAC-BiasSCLX1ACSyncTIPClampBypassLPF9/16/35/75MHzDisable= Open1k Ω 878 Ω3.3V675Ω150Ω0.1µF47µFOut33µFSAG75ΩMonitorOutput3.3V single-supply AC-input/AC-video output system w/SAG correction (1 of 3 channels shown).3.3VADC75Ω3-Channel SDTV Buffer with 5th-Order, Low-Pass Filter Compatible with DaVinci ProcessorsTHS7315Get samples, datasheets, evaluation modules and app reports at: www.ti.com/sc/device/THS7315Key Features• 5-pole Butterworth low-pass filterat 8.5MHz• Flexible input configuration• Gain of 5.2V/V (14.3dB) compatible withDaVinci, DM2xx, DM3xx, DM4xx andOMAP processors• Low total quiescent current:15.6mA at 3.3V• Rail-to-rail output swings within 100mVfrom the railsApplications• Set-top-box DAC output buffering• DVDR/PVR DAC output buffering• Portable/USB powered systemsTHS7315 is a low-power, single-supply (3V to 5V), 3-channel integrated video buffer. Itincorporates a fifth-order Butterworth filter which can be used as a DAC reconstruction filter oran ADC anti-aliasing filter. The 8.5MHz filter is a perfect choice for SDTV video which includesComposite (CVBS), S-Video, Y’U’V’, G’B’R’(R’G’B’), and Y’ P ’BP’ R 480i/576i. Its rail-to-rail outputstage allows for both AC and DC line driving.DAC/Encoder(DaVinci)SDTVCVBSS-Video Y’S-Video C’4801/5761Y’P’ B P’ RG’B’R’CVBSY’C’+1.8V500Ω500Ω500Ω+3.3VO1CH.1 IN2 CH.2 INCH.3 IN33VINTHS7315CH.18 OUTCH.2 7OUTCH.3 OUT 6GRN 5GAIN =5.2V/V75Ω75ΩCVBS OUTS-Video75ΩY’OUTC’OUTTHS731575Ω75Ω75Ω3.3V single-supply DaVinci interface with DC output coupled video line driver.Texas Instruments 3Q 2007Amplifier and Data Converter Selection Guide
Page 6 and 7: 6 Amplifiers➔Texas Instruments (T
Page 8 and 9: 8Amplifiers➔Precision Operational
Page 10 and 11: 10 Amplifiers➔Precision Operation
Page 12 and 13: 12➔AmplifiersPrecision Operationa
Page 14 and 15: 14AmplifiersPrecision Operational A
Page 16 and 17: 16Amplifiers➔High-Speed Amplifier
Page 18 and 19: 18➔AmplifiersHigh-Speed Amplifier
Page 22 and 23: 22Amplifiers➔Video AmplifiersVide
Page 24 and 25: 24➔AmplifiersComparatorsLow-Power
Page 26 and 27: 26 Amplifiers➔Difference Amplifie
Page 28 and 29: 28 Amplifiers➔Analog Current Shun
Page 30 and 31: 30 Amplifiers➔Instrumentation Amp
Page 32 and 33: 32➔AmplifiersSingle-Supply Instru
Page 34 and 35: 34 Amplifiers➔Programmable Gain A
Page 36 and 37: 36➔AmplifiersVoltage-Controlled G
Page 38 and 39: 38➔AmplifiersAudio AmplifiersPure
Page 40 and 41: 40Amplifiers➔Audio Power Amplifie
Page 42 and 43: 42 Amplifiers➔Power Amplifiers an
Page 44 and 45: 44 Amplifiers➔Pulse Width Modulat
Page 46 and 47: 46➔AmplifiersSensor Conditioners
Page 48 and 49: 48 Amplifiers➔Integrating Amplifi
Page 50 and 51: 50 Amplifiers➔Amplifiers for Driv
Page 52 and 53: 52 ADCs by Architecture➔Delta-Sig
Page 54 and 55: 54➔ADCs by ArchitectureDelta-Sigm
Page 56 and 57: 56 ADCs by Architecture➔Wide Band
Page 58 and 59: 58 ADCs by Architecture➔SAR ADCsS
Page 60 and 61: 60ADCs by Architecture➔SAR ADCs18
Page 62 and 63: 62➔ADCs by ArchitectureSuccessive
Page 64 and 65: 64 ADCs by Architecture➔Pipeline
Page 66 and 67: 66➔ADCs by ArchitecturePipeline A
Page 68 and 69: 68➔ADCs by ArchitecturePipeline A
Page 70 and 71:
70➔DACs by ArchitectureHigh-Accur
Page 72 and 73:
72DACs by Architecture➔High-Accur
Page 74 and 75:
74DACs by Architecture➔High-Accur
Page 76 and 77:
76DACs by Architecture➔Current St
Page 78 and 79:
78➔Analog Monitoring and ControlA
Page 80 and 81:
80 Analog Monitoring and Control➔
Page 82 and 83:
82Voltage References➔ Voltage Ref
Page 84 and 85:
84➔Temperature SensorsTemperature
Page 86 and 87:
86Quick Reference Selection TableAD
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
94Quick Reference Selection TableDA
Page 96 and 97:
96Quick Reference Selection TableDA
Page 98 and 99:
98Quick Reference Audio Selection T
Page 100 and 101:
100Quick Reference Audio Selection
Page 102 and 103:
102➔Design and Evaluation ToolsFi
Page 104 and 105:
104➔Design and Evaluation ToolsSi
Page 106 and 107:
106➔Design and Evaluation ToolsEv
Page 108 and 109:
108➔Design and Evaluation ToolsDa
Page 110 and 111:
110➔Design and Evaluation ToolsDa
Page 112 and 113:
112➔Design and Evaluation ToolsAm
Page 114 and 115:
114➔Design and Evaluation ToolsAp
Page 116 and 117:
116Device Index➔DevicePageDAC7643
Page 118 and 119:
118Device Index➔DevicePageTLV2544
Page 120 and 121:
Texas Instruments Incorporated14950
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Amplifier and Data Converter Selection Guide (Rev. B

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