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LMH0344

SNLS233O – APRIL 2007 – REVISED JULY 2015

LMH0344 3-Gbps HD - SD SDI Adaptive Cable Equalizer

1 Features

2 Applications

1

•

Compliant With ST 424, ST 292, ST 344, and ST

•

ST 424, ST 292, ST 344, and ST 259 Serial

•

Supports DVB-ASI at 270 Mbps

•

Serial Digital Data Equalization and Reception

•

Wide Range of Data Rates: 125 Mbps to 2.97

•

Data Recovery Equalization

Gbps

3 Description

•

Equalizes up to 120 Meters of Belden 1694A at

The LMH0344 3-Gbps HD – SD SDI Adaptive Cable

2.97 Gbps, up to 140 Meters of Belden 1694A at

Equalizer is designed to equalize data transmitted

1.485 Gbps, or up to 400 Meters of Belden 1694A

over cable (or any media with similar dispersive loss

at 270 Mbps

characteristics). The equalizer operates over a wide

•

Equalizes up to 120m of Belden 1694A at 2.97

range of data rates from 125 Mbps to 2.97 Gbps and

Gbps With 0.3 UI Maximum Output Jitter

supports ST 424, ST 292, ST 344, and ST 259.

•

Manual Bypass and Output Mute With a

The LMH0344 device implements DC restoration to

Programmable Threshold

correctly handle pathological data conditions. The

•

Single-Ended or Differential Input

equalizer may be driven in either a single-ended or

differential configuration.

•

50-

Ω Differential Outputs (Internal 50-Ω Pullups)

•

Single 3.3-V Supply Operation

Additional features include separate carrier detect

and output mute pins which may be tied together to

•

280-mW Typical Power Consumption

mute the output when no signal is present. A

•

16-Pin WQFN or 25-Ball CS-BGA Package

programmable mute reference is provided to mute the

•

Industrial Temperature Range:

−40°C to +85°C

output at a selectable level of signal degradation.

•

HBM ESD Rating: 8 kV

For applications using the 4:4:4:4 10 bits video

•

WQFN Version Footprint Compatible With the

format, the LMH0394 cable equalizer will provide

LMH0044, LMH0384, and LMH0074

better performance.

•

Replaces the Semtech GS2974A or GS2974B

The

device

is

available

in

two

space–saving

packages: a 4-mm × 4-mm 16-pin WQFN and even

more space-efficient 3-mm × 3-mm 25-ball CS-BGA

package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

(1)

Due to SMPTE naming convention, all SMPTE Engineering

WQFN (16)

4.00 mm × 4.00 mm

Documents will be numbered as a two-letter prefix and a

LMH0344

CS-BGA (25)

3.00 mm × 3.00 mm

number. Documents and references with the same root

number and year are functionally identical; for example ST

(1) For all available packages, see the orderable addendum at

424-2006 and SMPTE 424M-2006 refer to the same

the end of the data sheet.

document.

Functional Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.