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LMH0044SQ Datasheet

  • LMH0044SQ

  • National Semiconductor [SMPTE 292M / 259M Adaptive Cable Eq...

  • NSC

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LMH0044 SMPTE 292M / 259M Adaptive Cable Equalizer
PRELIMINARY
April 2006
LMH0044
SMPTE 292M / 259M Adaptive Cable Equalizer
General Description
The LMH0044 SMPTE 292M / 259M 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 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 by-
passed 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 out-
put 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.
Features
n
SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
n
Supports DVB-ASI at 270 Mbps
n
High data rates: 143 Mbps to 1.485 Gbps
n
Equalizes up to 140 meters of Belden 1694A at 1.485
Gbps or up to 350 meters of Belden 1694A at 270 Mbps
n
Manual bypass and output mute with a programmable
threshold
n
Single-ended or differential input
n
50鈩?differential outputs
n
Single 3.3V supply operation
n
208mW typical power consumption with 3.3V supply
n
Replaces the GS1574 and GS1574A
Applications
n
SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
digital interfaces
n
Serial digital data equalization and reception
n
Data recovery equalization
Typical Application
20177001
漏 2006 National Semiconductor Corporation
DS201770
www.national.com

LMH0044SQ 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Reel

  • 1000

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