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LMH0044 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMH0044 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 7 page 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 Ω 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 PRELIMINARY April 2006 © 2006 National Semiconductor Corporation DS201770 www.national.com |
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