THS7373

具有 1-SD 和 3-HD 6 阶滤波器和 6dB 增益的 4 通道视频放大器

Fabricated using the revolutionary, complementary Silicon-Germanium SiGe BiCom3X process, the is a low-power, single-supply, 3-V to 5-V, four-channel integrated video buffer. It incorporates one standard-definition CVBS and three high-definition HD filter channels. All filters feature sixth-order Butterworth characteristics that are useful as digital-to-analog converter DAC reconstruction filters or as analog-to-digital converter ADC anti-aliasing filters. The HD filters can be bypassed to support 1080p60 video or up to quad extended graphics array QXGA RGB video.

As part of the THS7373 flexibility, the input can be configured for ac- or dc-coupled inputs. The 300-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 composite video CVBS, Y′, and G′B′R′ signals. AC-coupled biasing for C′/P′B/P′R channels can easily be achieved by adding an external resistor to VS+.

The THS7373 rail-to-rail output stage with 6-dB gain allows for both ac and dc line driving. The ability to drive two lines, or 75-Ω loads, allows for maximum flexibility as a video line driver. The 16.2-mA total quiescent current at 3.3 V and 0.1 µA disabled mode makes it an excellent choice for power-sensitive video applications.

The THS7373 is available in a small TSSOP-14 package that is lead-free and green RoHS-compliant.

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One SDTV Video Amplifier for CVBS Video

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Three HDTV Video Amplifiers for Y’/P’B/P’R, 720p/1080i/1080p30, or G’B’R’ R’G’B’

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Sixth-Order Low-Pass Filters:

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CVBS Channel: –3 dB at 9.5-MHz

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HD Channels: –3 dB at 36-MHz with 350-MHz Bypass for 1080p60 Support

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Versatile Input Biasing:

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DC-Coupled with 300-mV Output Shift

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AC-Coupled with Sync-Tip Clamp

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Allows AC-Coupling with Biasing

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Built-in 6-dB Gain 2 V/V

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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 from the Rails: Allows AC or DC Output Coupling

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Supports Driving Two Video Lines/Channel

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Low Total Quiescent Current: 16.2 mA at 3.3 V

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Disabled Supply Current Function: 0.1 µA

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Low Differential Gain/Phase: 0.15%/0.25°

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RoHS-Compliant Package: TSSOP-14