LMH0344 3 Gbps HD/SD SDI Adaptive Cable Equalizer
February 19, 2008
LMH0344
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 143 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.
Features
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SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
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259M compliant
Supports DVB-ASI at 270 Mbps
High data rates: 143 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
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differential outputs
Single 3.3V supply operation
280 mW typical power consumption
Industrial temperature range: 鈭?0擄C to +85擄C
HBM ESD Rating: 8 kV
Footprint compatible with the LMH0044 and LMH0074
Replaces the Gennum GS2974A or GS2974B
Applications
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SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
259M serial digital interfaces
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Serial digital data equalization and reception
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Data recovery equalization
Typical Application
20199001
漏 2008 National Semiconductor Corporation
201990
www.national.com
LMH0344_08相關(guān)型號(hào)PDF文件下載
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