4:1 HDMI/DVI Switch with Equalization

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

* 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.

* Input cable equalizer enables use of long cables at the input (more than 20 meters of 24 AWG cable at 2.25 Gbps).

* 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

Data Sheet, Rev. 0, 1/07

* 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