AD8197B

4 ： 1 HDMI / DVI开关，具有均衡 4:1 HDMI/DVI Switch with Equalization

Product Details

The 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**

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Multiple input displays

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Projectors

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A/V receivers

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Set-top boxes

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Advanced television HDTV sets

### Features and Benefits

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Pin-to-pin compatible with the AD8197A

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Supports 250 Mbps to 2.25 Gbps data rates

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Supports 25 MHz to 225 MHz pixel clocks

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Equalized inputs allow use of long HDMI cables 20 meters at 2.25 Gbps

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Fully buffered unidirectional inputs/outputs

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Per input switchable, 50 Ω on-chip terminations

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Switchable output 50 Ω on-chip terminations

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Pre-emphasized outputs

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Low added jitter

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Single-supply operation 3.3 V

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Bidirectional unbuffered inputs/outputs

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Flexible supply operation 3.3 V to 5 V

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HDCP standard compatible

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Allows switching of DDC bus and 2 additional signals

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4 inputs, 1 output HDMI/DVI links

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Enables HDMI 1.3-compliant receiver

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Output disable feature

Reduced power dissipation

Removable output termination

Allows building of larger arrays

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Two AD8197Bs support HDMI/DVI dual link

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Standards compatible: HDMI receiver, HDCP, DVI

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Serial I2C slave and parallel control interface

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100-lead, 14 mm × 14 mm LQFP, Pb-free package

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