SDI

SDO

Bias Generator

SDO

SDI

Control

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6

LMH0302

SNLS247H – APRIL 2007 – REVISED JUNE 2016

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Copyright © 2007–2016, Texas Instruments Incorporated

7 Detailed Description

7.1 Overview

The LMH0302 ST 424, ST292, ST259 serial digital cable driver is a monolithic, high-speed cable driver designed

for use in serial digital video data transmission applications. The LMH0302 drives 75-

Ω transmission lines

(Belden 8281, 1694A, Canare L-5CFB, or equivalent) at data rates up to 2.97 Gbps.

The LMH0302 provides two selectable slew rates for ST 259 and ST 292/424 compliance. The output voltage

The LMH0302 is powered from a single 3.3-V supply. Power consumption is typically 125 mW in SD mode and

165 mW in HD mode. The LMH0302 is available in a 16-pin WQFN package.

7.2 Functional Block Diagram

7.3 Feature Description

The LMH0302 data path consists of several key blocks:

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Input interfacing

•

Output interfacing

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Output slew rate control

•

Output enable

7.3.1 Input Interfacing

The LMH0302 accepts either differential or single-ended input. The inputs are self-biased, allowing for simple AC

or DC coupling. DC-coupled inputs must be kept within the specified common-mode range.

7.3.2 Output Interfacing