AD8197 Datasheet, PDF (1/32 Pages) Analog Devices – 4:1 HDMI/DVI Switch with Equalization

Preliminary Data Sheet
4:1 HDMI/DVI Switch with Equalization
AD8197
FEATURES
Four inputs, one output HDMI™/DVI links
Enables HDMI 1.3-compliant receiver
Pin-to-pin compatible with the AD8191
Four 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)
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 AD8197s support HDMI/DVI dual-link
Standards compliant: HDMI receiver, HDCP, DVI
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
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
TYPICAL APPLICATION
Figure 2. Typical HDTV Application
GENERAL DESCRIPTION
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 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.
PrA
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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
1. Supports data rates up to 2.25 Gbps, enabling greater than
1080p HDMI formats with deep color, and 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.
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