LMH0024 Datasheet, PDF (1/7 Pages) National Semiconductor (TI) – 3.3V SMPTE 259M / 344M Adaptive Cable Equalizer

PRELIMINARY
February 2006
LMH0024
3.3V SMPTE 259M / 344M Adaptive Cable Equalizer
General Description
The LMH0024 SMPTE 259M / 344M adaptive cable equal-
izer 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 143 Mbps to 540 Mbps and sup-
ports SMPTE 259M and SMPTE 344M.
The LMH0024 implements DC restoration to correctly handle
pathological data conditions. DC restoration can be by-
passed for low data rate applications. The equalizer is flex-
ible in allowing either single-ended or differential input drive.
Additional features include a mute pin which can be used to
manually mute the output and a cable length indicator which
determines the amount of cable being equalized.
Features
n SMPTE 259M and SMPTE 344M compliant
n Supports DVB-ASI at 270 Mbps
n Data rates: 143 Mbps to 540 Mbps
n Equalizes up to 350 meters of Belden 1694A at 270
Mbps
n Manual bypass, cable length indicator, and output mute
n Single-ended or differential input
n 50Ω differential outputs
n Single 3.3V supply operation
n Industrial temperature range: −40˚C to +85˚C
n 198mW typical power consumption with 3.3V supply
n Footprint compatible with the LMH0034 and the GS9064
Applications
n SMPTE 259M and SMPTE 344M serial digital interfaces
n Serial digital data equalization and reception
n Data recovery equalization
Typical Application
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