LMH0074 Datasheet, PDF (1/8 Pages) Intersil Corporation – SMPTE 259M / 344M Adaptive Cable Equalizer

LMH0074
August 27, 2009
SMPTE 259M / 344M Adaptive Cable Equalizer
General Description
The LMH0074 SMPTE 259M / 344M Adaptive Cable Equal-
izer is designed to equalize 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 540 Mbps and supports SMPTE 259M and SMPTE
344M.
The LMH0074 implements DC restoration to correctly handle
pathological data conditions. 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 pro-
vided to mute the output at a selectable level of signal degra-
dation.
Features
■ ^{SMPTE 259M and SMPTE 344M compliant}
■ ^{Supports DVB-ASI at 270 Mbps}
■ ^{Data rates: 125 Mbps to 540 Mbps}
■ ^{Equalizes 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}
■ ^{Industrial temperature range: −40°C to +85°C}
■ ^{208mW typical power consumption with 3.3V supply}
■ ^{Footprint compatible with the LMH0044 and the GS9074A}
Applications
■ ^{SMPTE 259M and SMPTE 344M serial digital interfaces}
■ ^{Serial digital data equalization and reception}
■ ^{Data recovery equalization}
Typical Application
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