Features and Benefits

  • 4 inputs, 1 output HDMI/DVI links
  • Enables HDMI 1.3-compliant receiver
  • Pin-to-pin compatible with the AD8191
  • 4 TMDS® channels per link
    Supports 250 Mbps to 2.25 Gbps data rates
    Supports 25 MHz to 225 MHz pixel clocks
    Equalized inputs for operation with long HDMI cables (20 meters at 2.25 Gbps)
    Fully buffered unidirectional inputs/outputs
  • Globally switchable, 50 Ω on-chip terminations
    Pre-emphasized outputs
    Low added jitter
    Single-supply operation (3.3 V)
  • 4 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 2 additional signals
  • Multiple channel bundling modes
    1× (4:1) HDMI/DVI link switch (default)
    2× (8:1) TMDS channel and auxiliary signal switch
    1× (16:1) TMDS channel and auxiliary signal switch
  • Output disable feature
    Reduced power dissipation
    Removable output termination
    Allows building of larger arrays
  • Two AD8197s support HDMI/DVI dual-link
  • Standards compatible: HDMI receiver, HDCP, DVI
  • Serial (I2C® slave) and parallel control interface
  • 100-lead, 14 mm × 14 mm LQFP, Pb-free package

Product Details

The AD8197 is an HDMI/DVI 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 to allow the construction of larger arrays using the wire-OR technique. Flexible channel bundling modes (for both the TMDS channels and the auxiliary signals) allow the AD8197 to be configured as a 4:1 single HDMI/DVI link switch, a dual 8:1 switch, or a single 16:1 switch.

The AD8197 is provided in a 100-lead LQFP, Pb-free, surface-mount package, specified to operate over the −40°C to +85°C temperature range.

Product Highlights

  1. Supports data rates up to 2.25 Gbps, enabling 1080p deep color (12-bit color) HDMI formats, and greater than UXGA (1600 × 1200) DVI resolutions.
  2. Input cable equalizer enables use of long cables at the input (more than 20 meters of 24 AWG cable at 2.25 Gbps).
  3. Auxiliary switch routes a DDC bus and two additional signals for a single-chip, HDMI 1.3 receive-compliant solution.


  • Multiple input displays
  • Projectors
  • A/V receivers
  • Set-top boxes
  • Advanced television (HDTV) sets

Data Sheet, Rev. 0, 1/07

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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