Quad Copper-Cable Signal Conditioner

2.5Gbps to 3.2Gbps Quad, Copper-Cable Signal Conditioner Provides Compensation for 4x Copper Infiniband and 10Gbase-Cx4 Ethernet Links, Allowing Spans of 20m with 24AWG and 15m with 28AWG

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The MAX3983 is a quad copper-cable signal conditioner that operates from 2.5Gbps to 3.2Gbps. It provides compensation for 4x copper InfiniBand® and 10Gbase-CX4 Ethernet links, allowing spans of 20m with 24AWG and 15m with 28AWG. The cable driver section provides four selectable preemphasis levels. The input to the cable driver compensates for up to 0.5m of FR4 circuit board material. The cable receiver section provides additional fixed input equalization while offering selectable preemphasis to drive FR4 circuit boards up to 0.5m.

The MAX3983 also features signal detection on all eight inputs and internal loopback that allows for diagnostic testing. It is packaged in a 10mm x 10mm, 68-pin QFN and operates from 0°C to +85°C.
MAX3983: Typical Application Circuit MAX3983: Typical Application Circuit Enlarge+

Key Features

  • Link Features
    • Span 20m with 24AWG, 15m with 28AWG
    • Span 0.5m of FR4 on Each Host
    • 1.6W Total Power with 3.3V Supply
    • Loopback Function
  • Cable Driver Features
    • Selectable Output Preemphasis
    • FR4 Input Equalization
    • Signal Detect for Each Channel
    • Output Disable
  • Cable Receiver Features
    • Selectable FR4 Output Preemphasis
    • Cable Input Equalization
    • Signal Detect for Each Channel
    • Output Disable


  • 10G Fibre Channel XAUI (4 x 3.1875Gbps)
  • 10Gbase-CX4 Ethernet (4 x 3.125Gbps)
  • 4x Copper-Cable or Backplane Transmission (1Gbps to 3.2Gbps)
  • 4x InfiniBand® (4 x 2.5Gbps)
Product Reliability Reports: MAX3983.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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