1FEATURES

2• SMPTE 292M, SMPTE 344M and SMPTE 259M

Compliant

• Supports DVB-ASI at 270 Mbps

• Data rates: 125 Mbps to 1.485 Gbps

• Equalizes up to 200 Meters of Belden 1694A at

1.485 Gbps or up to 400 meters of Belden

1694A at 270 Mbps

• Manual Bypass and Output Mute with a

Programmable Threshold

• Single-Ended or Differential Input

• 50Ω Differential Outputs

• Single 3.3V Supply Operation

• 208 mW Typical Power Consumption with 3.3V

Supply

• Replaces the GS1574 and GS1574A

APPLICATIONS

• SMPTE 292M, SMPTE 344M, and SMPTE 259M

Serial Digital Interfaces

• Serial Digital Data Equalization and Reception

• Data Recovery Equalization

DESCRIPTION

The LMH0044 SMPTE 292M / 259M adaptive cable

equalizer is a monolithic integrated circuit for

equalizing data transmitted over cable (or any media

with similar dispersive loss characteristics). The

equalizer operates over a wide range of data rates

from 125 Mbps to 1.485 Gbps and supports SMPTE

292M, SMPTE 344M and SMPTE 259M.

The LMH0044 implements DC restoration to correctly

handle pathological data conditions (DC restoration

may be bypassed for low data rate applications). The

equalizer may be driven in either a single ended or

differential configuration.

Additional features include separate carrier detect

and output mute pins which may be tied together to

mute the output when no signal is present. A

programmable mute reference is provided to mute the

output at a selectable level of signal degradation.