SDI Interfaces

 As a pioneer in digital video, Semtech’s Gennum Products continue to lead the way in proven UHD-SDI/12G, 3G, HD and SD technologies. Semtech continues its leadership in SDI technology by being first to market with an array of advanced UHD-SDI solutions. In fact, there’s a good chance that any TV broadcast or professional video passed through several Semtech components.

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Multi-Rate 6G UHD–SDI Reclocker

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The GS6151 is a low-power, multi-rate serial digital reclocker designed to automatically recover the embedded clock from a digital video signal and re-time the incoming video data.
The GS6151 will recover the embedded clock signal and retime the data from 6G UHD-SDI signals compliant with the proposed SMPTE ST 2081. In addition, it can also re-time SMPTE ST 259-C, SMPTE ST 292, SMPTE ST 424 or DVB-ASI compliant digital video signals as well as MADI audio streams.

Semtech GS6150 Family Overview Video



  • SMPTE ST 2081, ST 424, ST 292, and ST 259-C compliant
  • Supports retiming data at rates of 125Mb/s, 270Mb/s, 1.485 and 1.485/1.001Gb/s, 2.97 and 2.97/1.001Gb/s,5.94 and 5.94/1.001Gb/s
  • Supports retiming of DVB-ASI signals
  • Automatic or Manual Rate Selection
    • Detected rate indication in Auto Mode
  • 2:1 input selector
  • Option of two reclocked data outputs or one data output and one recovered clock output
  • Two configurable GPIO pins with ability to output
  • device status, including:
    • Lock Detect
    • Loss of Signal (LOS) outputs
    • Low/High bit-rate indication for slew-rate control of SDI cable drivers
  • On-chip 100 Ohms differential input and output termination
  • Bypass support for rates up to 5940Mb/s
    • Manual Bypass function
    • Configurable automatic Bypass when not locked
  • Option to use external reference or operate referenceless
  • Cascading reference buffer supports multiple reclockers using a single reference source
  • Input signal equalization and output signal de-emphasis to compensate for trace dielectric losses
  • Single power supply operation at 1.8V
  • 130mW typical power consumption (150mW with second output enabled)
  • Pb-free and RoHS compliant
  • Operating temperature range: -40°C to 85°C


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