LMH0034

ACTIVE

SMPTE 292M / 259M adaptive cable equalizer

Product details

Function Equalizer Supply voltage (V) 3.3 Power consumption (mW) 210 Data rate (max) (Mbps) 1485 Control interface Pin Operating temperature range (°C) 0 to 85
Function Equalizer Supply voltage (V) 3.3 Power consumption (mW) 210 Data rate (max) (Mbps) 1485 Control interface Pin Operating temperature range (°C) 0 to 85
SOIC (D) 16 59.4 mm² 9.9 x 6
  • SMPTE 292M, SMPTE 344M and SMPTE 259M Compliant
  • Supports DVB-ASI at 270 Mbps
  • Data Rates: 125 Mbps to 1.485 Gbps
  • Equalizes up to 200 Meters of Belden 1694A at 1.485 Gbps or up to 400 Meters of Belden 1694A at 270 Mbps
  • Manual Bypass, Cable Length Indicator, and Output Mute with a Programmable Threshold
  • Single-Ended or Differential Input
  • 50Ω Differential Outputs
  • Single 3.3V Supply Operation
  • 208 mW Typical Power Consumption with 3.3V Supply
  • Replaces the GS1524 and GS1524A

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  • SMPTE 292M, SMPTE 344M and SMPTE 259M Compliant
  • Supports DVB-ASI at 270 Mbps
  • Data Rates: 125 Mbps to 1.485 Gbps
  • Equalizes up to 200 Meters of Belden 1694A at 1.485 Gbps or up to 400 Meters of Belden 1694A at 270 Mbps
  • Manual Bypass, Cable Length Indicator, and Output Mute with a Programmable Threshold
  • Single-Ended or Differential Input
  • 50Ω Differential Outputs
  • Single 3.3V Supply Operation
  • 208 mW Typical Power Consumption with 3.3V Supply
  • Replaces the GS1524 and GS1524A

All trademarks are the property of their respective owners.

The LMH0034 SMPTE 292M / 259M adaptive cable equalizer 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 125 Mbps to 1.485 Gbps and supports SMPTE 292M, SMPTE 344M and SMPTE 259M.

The LMH0034 implements DC restoration to correctly handle pathological data conditions. DC restoration can be bypassed for low data rate applications. The equalizer is flexible in allowing either single-ended or differential input drive.

Additional features include a combined carrier detect and output mute pin which mutes the output when no signal is present. A programmable mute reference is used to mute the output at a selectable level of signal degradation. A cable length indicator is provided to determine the amount of cable being equalized.

The LMH0034 SMPTE 292M / 259M adaptive cable equalizer 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 125 Mbps to 1.485 Gbps and supports SMPTE 292M, SMPTE 344M and SMPTE 259M.

The LMH0034 implements DC restoration to correctly handle pathological data conditions. DC restoration can be bypassed for low data rate applications. The equalizer is flexible in allowing either single-ended or differential input drive.

Additional features include a combined carrier detect and output mute pin which mutes the output when no signal is present. A programmable mute reference is used to mute the output at a selectable level of signal degradation. A cable length indicator is provided to determine the amount of cable being equalized.

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Type Title Date
* Data sheet LMH0034 SMPTE 292M / 259M Adaptive Cable Equalizer datasheet (Rev. H) 15 Apr 2013
Selection guide Broadcast and Professional Video Interface Solutions (Rev. E) 05 Apr 2017
Application note AN-1372 LMH0034 PCB Layout Techniques (Rev. B) 26 Apr 2013
Application note AN-1943 Understanding Serial Digital Video Bit Rates (Rev. A) 26 Apr 2013
Application note AN-2145 Power Considerations for SDI Products (Rev. B) 26 Apr 2013
Application note AN-2146 Power Design for SDI and Other Noise-Sensitive Devices (Rev. A) 26 Apr 2013
User guide SD034EVK User's Guide 27 Jun 2012
Application note High-Speed Board Layout Challenges in FPGA/SDI Sub-Systems 12 Nov 2009
Application note Timing is Everything ‚Çô The Broadcast Video Signal Path 02 Aug 2007
Design guide Broadcast Video Owner's Manual 17 Nov 2006

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