4-Ch SDTV (Component and Composite) Video Amplifier with 9.5MHz Filters and 6dB Gain - THS7374

THS7374 (ACTIVE)

4-Ch SDTV (Component and Composite) Video Amplifier with 9.5MHz Filters and 6dB Gain

 

Description

Fabricated using the revolutionary complementary Silicon-Germanium (SiGe) BiCom3X process, the THS7374 is a low-power, single-supply 3 V to 5 V four-channel integrated video buffer. It incorporates a sixth-order Butterworth filter (able to be bypassed) which is useful as a digital-to-analog converter (DAC) reconstruction filter or an analog-to-digital converter (ADC) anti-aliasing filter. The 9.5-MHz filter is a perfect choice for SDTV video that includes composite (CVBS), s-video, Y'U'V', G'B'R' (R'G'B'), and Y'P'BP'R 480i/576i.

As part of the THS7374 flexibility, the input can be configured for either 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 CVBS, Y', and G'B'R' signals with sync. AC-coupled biasing for C'/P'B/P'R channels can easily be achieved by adding an external resistor.

The THS7374 is the perfect choice for all video buffer applications. Its rail-to-rail output stage with 6-dB gain allows for both ac and dc line driving. The ability to drive two lines per channel, or 75-Ω loads, allows for maximum flexibility as a video line driver. The 9.6-mA total quiescent current at 3.3 V and 0.1-µA disabled current makes it an excellent choice for portable or other power-sensitive applications.

The THS7374 is available in a TSSOP-14 package that is lead-free and green (RoHS) compliant.

Features

  • 4-SDTV Video Amplifiers for CVBS, S-Video,
    Y'P'BP'R 480i/576i, Y'U'V', or G'B'R' (R'G'B')
  • Integrated Low-Pass Filters:
    • 6th-Order 9.5-MHz (–3 dB) Butterworth
    • –1 dB Passband Bandwidth at 8.2-MHz
    • 54-dB Attenuation at 27-MHz
  • 150-MHz (–3 dB) Filter Bypass Mode
  • Versatile Input Biasing
    • DC-Coupled with 300-mV Output Shift
    • AC-Coupled with Sync-Tip Clamp
    • AC-Coupled with Biasing Allowed
  • Built-in 6-dB Gain (2 V/V)
  • +3-V to +5-V Single-Supply Operation
  • Rail-to-Rail Output:
    • Output Swings Within 100 mV from the Rails to Allow AC or DC Output Coupling
    • Supports Driving 2 Lines per Channel
  • Low 9.6-mA at 3.3-V Total Quiescent Current
  • 0.1-µA Disabled Supply Current Function
  • Low Differential Gain/Phase of 0.15%/0.3°
  • Lead-Free and Green TSSOP-14 Package

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