HDMI/DVI TMDS Equalizer

ADV3003

Rev. 0

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FEATURES

One input, one output HDMI/DVI high speed signal

equalizer/driver

Enables HDMI 1.3 receive-compliant input

Four TMDS channels per input/output

Supports 250 Mbps to 2.25 Gbps data rates

Supports 25 MHz to 225 MHz pixel clocks

Fully buffered unidirectional inputs/outputs

Equalized inputs for operation with long HDMI cables

(20 meters at 2.25 Gbps)

Pre-emphasized outputs

Matched 50 Ω input and output on-chip terminations

Low added jitter

Transmitter disable feature

Reduces power dissipation

Disables input terminations

Single-supply operation (3.3 V)

Standards compliant: HDMI receiver, DVI

40-lead, 6 mm × 6 mm, RoHS-compliant LFCSP

APPLICATIONS

Multiple input displays

Advanced television set (HDTV) front panel connectors

HDMI/DVI cable extenders

FUNCTIONAL BLOCK DIAGRAM

IP[3:0]

IN[3:0]

VTTI

OP[3:0]

AVEE

VTTO

AVCC

ON[3:0]

+

–

+

–

EQ

BUFFER

PE

CONTROL

LOGIC

4

4

4

4

HIGH SPEED

BUFFERED

PE_EN TX_EN

PARALLEL

CONTROL

ADV3003

Figure 1.

TYPICAL APPLICATION DIAGRAM

MEDIA CENTER

SET-TOP BOX

DVD PLAYER

HDTV SET

4:1 HDMI

SWITCH

ADV3003

HDMI

RECEIVER

FRONT PANEL

CONNECTOR

BACK PANEL

CONNECTORS

GAME

CONSOLE

Figure 2.

GENERAL DESCRIPTION

The ADV3003 is a 4-channel transition minimized differential

signaling (TMDS) buffer featuring equalized inputs and

pre-emphasized outputs. The ADV3003 features 50 Ω input

and output terminations, providing full-swing output signal

recovery and minimizing reflections for improved system

signal integrity. The ADV3003 is targeted at HDMI™/DVI

applications and is ideal for use in systems with long cable

runs, long PCB traces, and designs with interior cabling.

The ADV3003 is provided in a 40-lead, LFCSP, surface-mount,

RoHS-compliant, plastic package and is 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.

The 12 dB input cable equalizer enables the use of long

cables at the input. For a typical 24 AWG cable, the

ADV3003 compensates for more than 20 meters at data

rates up to 2.25 Gbps.

3.

The selectable 6 dB of output pre-emphasis allows the

ADV3003 to drive high loss output cables or long PCB traces.

4.

Matched 50 Ω on-chip input and output terminations

improve system signal integrity.

5.

An external control pin, PE_EN, sets the output

pre-emphasis to either 0 dB or 6 dB.

6.

An external control pin, TX_EN, simultaneously disables

both the transmitter and the on-chip input terminations.

This feature reduces the power dissipation of the ADV3003

and indicates to a connected source when the ADV3003 is

disabled.