3.2Gbps Adaptive Equalizer and Cable Driver

Industry's First 3.2Gbps Adaptive Cable Equalizer/Driver

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The MAX3800 is a +3.3V adaptive cable equalizer and cable driver implemented together on a single chip. It is designed for coaxial and twin-axial cable point-to-point communications applications. The driver features differential current-mode logic (CML) inputs and outputs as well as adjustable output amplitude. The equalizer includes differential CML data inputs and outputs, a loss-of-signal (active-low LOS) output, and a cable integrity monitor (CIM) output.

The adaptive cable equalizer is capable of equalizing differential or single-ended signals at data rates up to 3.2Gbps. It automatically adjusts to attenuation caused by skin-effect losses of up to 30dB at 1.6GHz. The equalizer effectively extends the usable length of copper cable in high-frequency interconnect applications.

The MAX3800 is available in a 32-pin TQFP package with exposed pad and consumes only 200mW at +3.3V. The driver can be disconnected from the power supply when it is not needed, resulting in a 40% reduction in supply current.
MAX3800: Typical Application Circuit MAX3800: Typical Application Circuit Enlarge+

Key Features

  • Single +3.3V Operation
  • Typical Power Dissipation = 200mW at +3.3V
  • Data Rates Up to 3.2Gbps
  • Adjustable Cable Driver Output Amplitude
  • Equalizer Automatically Adjusts for Different Cable Lengths
  • 0dB to 30dB Equalization at 1.6GHz (3.2Gbps)
  • Loss-of-Signal (active-low LOS) Indicator
  • Cable Integrity Monitor (CIM)
  • On-Chip Input and Output Terminations
  • Low External Component Count
  • Operating Temperature Range = 0°C to +85°C
  • ESD Protection on Cable Inputs and Outputs


  • Backplane and Interconnect Applications
  • High-Speed Links in Communications and Data Systems
  • SDH/SONET Transmission Equipment

MAX3800EVKIT: Evaluation Kit for the MAX3800
Product Reliability Reports: MAX3800.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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