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AD8197B:  4:1 HDMI/DVI SWITCH WITH EQUALIZATION

The AD8197B is an HDMI™/DVI switch featuring equalized TMDS® inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. The AD8197B offers individual control of the on/off state of the TMDS input termination resistors via I2C control. Outputs can be set to a high impedance state to reduce the power dissipation and/or to allow the construction of larger arrays using ...More

AD8197B:  4:1 HDMI/DVI SWITCH WITH EQUALIZATION

Product Description

The AD8197B is an HDMI™/DVI switch featuring equalized TMDS® inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. The AD8197B offers individual control of the on/off state of the TMDS input termination resistors via I2C control. 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.

The AD8197B 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.

Applications

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

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  • Pin-to-pin compatible with the AD8197A

    • 4 TMDS channels per link

  • Supports 250 Mbps to 2.25 Gbps data rates
  • Supports 25 MHz to 225 MHz pixel clocks
  • Equalized inputs allow use of long HDMI cables (20 meters at 2.25 Gbps)
  • Fully buffered unidirectional inputs/outputs
  • Per input switchable, 50 Ω on-chip terminations
  • Switchable output 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
  • 4 inputs, 1 output HDMI/DVI links
  • Enables HDMI 1.3-compliant receiver
  • Output disable feature
    Reduced power dissipation
    Removable output termination
    Allows building of larger arrays
  • Two AD8197Bs 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
  • Front Panel Buffer: X
  • HDMI/DVI Input Channels: 4
  • HDMI/DVI Output Channels: 1
  • Input Equalization (dB): 12dB
  • Max Datarate (Gbps): 2.25Gbps
  • Max Resolution: 1080p/UXGA
  • Output Pre-Emphasis (dB): 6dB
  • Package: 100-LQFP

Functional Block Diagram for AD8197B

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