2:1 HDMI/DVI Switch with Equalization

AD8190

Rev. 0

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FEATURES

Two inputs, one output HDMI/DVI links

Enables HDMI 1.2a-compliant receiver

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

Output disable feature

Reduced power dissipation

Output termination removal

Two AD8190s support HDMI/DVI dual-link

Standards compliant: HDMI receiver, HDCP, DVI

56-lead, 8 mm x 8 mm, LFCSP, Pb-free package

APPLICATIONS

Multiple input displays

Projectors

A/V receivers

Set-top boxes

Advanced television (HDTV) sets

FUNCTIONAL BLOCK DIAGRAM

LOW SPEED

UNBUFFERED

AVCC

DVCC

AMUXVCC

AVEE

DVEE

VTTO

OP[3:0]

AUX_COM[3:0]

I2C_SDA

I2C_SCL

I2C_ADDR

ON[3:0]

+

–

4

4

4

4

4

AD8190

RESET

CONTROL

LOGIC

CONFIG

INTERFACE

SERIAL INTERFACE

VTTI

IP_A[3:0]

IN_A[3:0]

+

–

4

4

VTTI

IP_B[3:0]

IN_B[3:0]

+

–

4

4

PE

EQ

SWITCH

CORE

AUX_A[3:0]

AUX_B[3:0]

BIDIRECTIONAL

HIGH SPEED

BUFFERED

SWITCH

CORE

Figure 1.

TYPICAL APPLICATION

01:18

DVD

DVD PLAYER

SET-TOP BOX

HDTV SET

HDMI

RECEIVER

AD8190

Figure 2. Typical AD8190 Application for HDTV Sets

GENERAL DESCRIPTION

The AD8190 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.

The AD8190 is provided in a space saving, 56-lead, LFCSP,

surface-mount, Pb-free, plastic package and is specified to

operate over the −40°C to +85°C temperature range.

PRODUCT HIGHLIGHTS

1.

Supports data rates up to 1.65 Gbps, enabling UXGA

(1600 × 1200) DVI resolutions and 1080p HDMI formats.

2.

Input cable equalizer enables use of long cables at the

input (more than 20 meters of 24 AWG cable at 1080p).

3.

Auxiliary switch allows routing of the DDC bus and two

additional single-ended signals for a single chip, fully

HDMI 1.2a receive-compliant solution.