GENERAL DESCRIPTION

The AD8191 is a 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 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 AD8191 to be configured as a 4:1 single HDMI/DVI link switch, a dual 8:1 switch, or a single 16:1 switch.

FEATURES

Four inputs, one output HDMI™/DVI links

Four TMDS channels per link

Supports 250 Mbps to 1.65 Gbps data rates

Supports 25 MHz to 165 MHz pixel clocks

Equalized inputs for operation with long HDMI cables(20 meters at 1080p)

Fully buffered unidirectional inputs/outputs

Globally switchable, 50 Ω on-chip terminations

Pre-emphasized outputs

Low added jitter

Single-supply operation (3.3 V)

Four 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 two additional signals

Multiple channel bundling modes

1x (4:1) HDMI/DVI link switch (default)

2x (8:1) TMDS channel and auxiliary signal switch

1x (16:1) TMDS channel and auxiliary signal switch

Output disable feature

Reduced power dissipation

Removable output termination

Allows building of larger arrays

Two AD8191s support HDMI/DVI dual-link

Standards compatible: HDMI receiver, DVI, HDCP

Serial (I2C® slave) and parallel control interface

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

APPLICATIONS

Multiple input displays

Projectors

A/V receivers

Set-top boxes

Advanced television (HDTV) sets