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AD8197B:  4:1 HDMI/DVI Switch with Equalization

Product Details

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.


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


  • 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

Functional Block Diagram for AD8197B


AdvantivAdditional product choices for Advanced TV applications are available on the Advantiv® site.


Title Content Type File Type
AD8197B: 4:1 HDMI/DVI Switch with Equalization Data Sheet (Rev 0, 01/2008) (pdf, 798 kB) Data Sheets PDF
Analysis of Common Failures of HDMI CT
By Brett Li and Lie Dou, ATV Product Line, Analog Devices
(Digital TV DesignLine, 4/2/2008)
Technical Articles HTML
Analog Devices in Advanced TV Overview HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

AD8197B Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD8197BASTZ Status: Production 100 ld LQFP 100 Ind Tray, 90 $7.52 $5.01 Y  Material Info PCN Purchase
AD8197BASTZ-RL Status: Production 100 ld LQFP 100 Ind Reel, 1000 - $5.01 Y  Material Info PCN Purchase
Price Table Help

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.

AD8197B Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD8197B-EVALZ Status: Production Evaluation Board $759.00 Yes - Contact ADI

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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