LMH0344_09 Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Adaptive Cable Equalizer

LMH0344
July 15, 2009
3 Gbps HD/SD SDI Adaptive Cable Equalizer
General Description
The LMH0344 3 Gbps HD/SD SDI Adaptive Cable Equalizer
is designed to equalize data transmitted over cable (or any
media with similar dispersive loss characteristics). The equal-
izer operates over a wide range of data rates from 125 Mbps
to 2.97 Gbps and supports SMPTE 424M, SMPTE 292M,
SMPTE 344M, and SMPTE 259M.
The LMH0344 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.
The device is available in two space–saving packages: a 4 X
4 mm 16-pin LLP and even more space–efficient 3 x 3 mm
25-ball MICRO-ARRAY package.
Features
■ ^{SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE}
259M compliant
■ ^{Supports DVB-ASI at 270 Mbps}
■ ^{Wide range of data rates: 125 Mbps to 2.97 Gbps}
■ ^{Equalizes up to 120 meters of Belden 1694A at 2.97 Gbps,}
up to 140 meters of Belden 1694A at 1.485 Gbps, or up to
400 meters of Belden 1694A at 270 Mbps
■ ^{Equalizes 0-120m of Belden 1694A at 2.97 Gbps with}
0.3 UI maximum output jitter
■ ^{Manual bypass and output mute with a programmable}
threshold
■ ^{Single-ended or differential input}
■ 50Ω differential outputs (internal 50Ω pullups)
■ ^{Single 3.3V supply operation}
■ ^{280 mW typical power consumption}
■ ^{16-pin LLP or 25-ball MICRO-ARRAY package}
■ ^{Industrial temperature range: −40°C to +85°C}
■ ^{HBM ESD Rating: 8 kV}
■ ^{LLP version footprint compatible with the LMH0044 and}
LMH0074
■ ^{Replaces the Gennum GS2974A or GS2974B}
Applications
■ ^{SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE}
259M serial digital interfaces
■ ^{Serial digital data equalization and reception}
■ ^{Data recovery equalization}
Typical Application
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