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AD8191:  4:1 DVI/HDMI SWITCH WITH EQUALIZATION

The AD8191 is a DVI/HDMI switch featuring equalized TMDS inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. Outputs can be set to a high impedance state to reduce the power dissipation and/or allow the construction of larger arrays using the wire-OR technique. Flexible channel bundling modes allow the AD8191 to be configured as a 4:1 single DVI/HDMI link switch, a dual ...More

AD8191:  4:1 DVI/HDMI Switch with Equalization

Product Description

The AD8191 is a DVI/HDMI switch featuring equalized TMDS inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. Outputs can be set to a high impedance state to reduce the power dissipation and/or allow the construction of larger arrays using the wire-OR technique. Flexible channel bundling modes allow the AD8191 to be configured as a 4:1 single DVI/HDMI link switch, a dual 8:1 TMDS channel switch, or a single 16:1 TMDS channel switch.

The AD8191 is provided in a 100-lead LQFP lead-free package specified to operate over the 0°C to 70°C temperature range.

Product Highlights

  1. Supports data rates up to 1.65Gbps, enabling UXGA (1600x1200) DVI resolutions and 1080p HDMI formats.
  2. Input cable equalizer enables use of long cables at the input (more than 20 meters of 24 AWG cable at 1080p).
  3. Auxiliary switch allows routing of DDC signals for a single-chip, fully HDMI 1.2a receive-compliant solution.
Applications
  • Multi-input displays and projectors
  • A/V receivers
  • Set-top boxes
  • Advanced television (HDTV)

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    • Four inputs, one output DVI/HDMI links:
    • Four auxiliary channels per link
      Bidirectional unbuffered inputs/outputs
      Flexible supply operation (3.3 V to 5 V)
      HDCP standard compatible
      Allows switching of DDC bus and two additional signals

      • Four TMDS channels per link

    • Supports 250 Mbps to 1.65 Gbps data rates
    • Supports 25 MHz to 165 MHz pixel clocks
    • Equalized inputs for operation with long HDMI cables (20 meters at 1080p)
    • Fully buffered unidirectional inputs/outputs
    • Globally switchable 50 Ω on-chip terminations
    • Pre-emphasized outputs
    • Low added jitter
    • Single-supply operation (3.3 V)
    • Multiple channel bundling modes
      1x(4:1) DVI/HDMI link switch (default)
      2x(8:1) TMDS channel switch
      1x(16:1) TMDS channel switch
    • Output disable feature
    • Reduced power dissipation
    • Allows building of larger arrays
    • Two AD8191s support DVI/HDMI dual-link
    • Standards compatible: DVI, HDMI, HDCP
    • Serial (12C slave) and parallel control interface
    • 100-pin 14 mm × 14 mm LQFP Pb-free package
    • HDMI/DVI Input Channels: 4
    • HDMI/DVI Output Channels: 1
    • Input Equalization (dB): 12dB
    • Max Datarate (Gbps): 1.65Gbps
    • Max Resolution: 1080p/UXGA
    • Output Pre-Emphasis (dB): 6dB
    • Package: 100-LQFP

    Functional Block Diagram for AD8191

    OF NOTE ...

    AdvantivNot recommended for new designs. The suggested replacement part is AD8197B. Additional product choices for Advanced TV applications are available on the Advantiv® site.

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