THS7315

具有 5 阶滤波器和 5.2V/V 增益的 3 通道 SDTV 视频放大器

Fabricated using the revolutionary complementary silicon-sermanium SiGe BiCom3 process, the is a low-power, single-supply, 3-V to 5-V 3-channel integrated video buffer. It incorporates a 5th-order Butterworth filter that is useful as a digital-to-analog converter DAC reconstruction filter or an analog-to-digital converter ADC anti-aliasing filter. The 8.5-MHz filter is a perfect choice for SDTV video, including Composite Video Baseband Signals CVBS, S-Video, Y’U’V’, G’B’R’ R’G’B’, and Y’P’BP’R 480i/576i.

The THS7315 inputs can be either ac- or dc-coupled. The 230-mV output level shift allows for a full sync dynamic range at the output with 0 V input. The ac-coupled modes include a transparent sync-tip clamp option for CVBS, Y", and G"B"R" signals with bottom-level sync. AC-coupled biasing for C"/P"B/P"R channels can easily be achieved by adding an external resistor to VS+.

The THS7315 is the perfect choice for all output buffer applications. Its rail-to-rail output stage with 5.2-V/V gain allows for both ac and dc line driving, making it a perfect choice for DaVinci processors. The ability for each channel to drive two video lines, or 75- loading, allows for maximum flexibility as a video line driver. The 15.6-mA quiescent current at 3.3 V also makes it an excellent choice for USB-powered, portable, or other power-sensitive video applications

The THS7315 is available in a small SOIC-8 package that is lead-free and compliant with green requirements.

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Three SDTV Video Amplifiers for CVBS, S-Video, Y"P"BP"R 480i/576i, Y"U"V", or G"B"R" R"G"B"

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Integrated Low-Pass Filters:

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5th-Order, 8.5-MHz -3dB Butterworth

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-1dB Passband Bandwidth at 7 MHz

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47 dB Attenuation at 27 MHz

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Versatile Input Biasing:

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DC-Coupled with 230-mV Output Shift

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AC-Coupled with Sync-Tip Clamp

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Allows AC-Coupled With DC-Biasing

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Built-in 5.2 V/V Gain 14.3 dB

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+3-V to +5-V Single Supply Operation

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Rail-to-Rail Output:

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Output Swings Within 100 mV of the Rails, Allowing AC- or DC-Output Coupling

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Supports Driving Two Lines per Channel

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Low Total Quiescent Current: 15.6 mA at 3.3 V

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Low Differential Gain/Phase of 0.2%/0.3°

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Lead-free, Green SOIC-8 Package

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APPLICA ONS

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Set Top Box Output Video Buffering

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PVR/DVDR Output Buffering

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USB/Portable Low-Power Video Buffering

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