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

See parametric specs for Equalizers (Cable and Circuit Board) (9)

Part NumberApplicationsData Rate
Data Rate
Max. Reach @ Max. Data RateVSUPPLY
I/O TypeChannelsRx Eq. @ Max. Rate
Package/PinsOper. Temp.
minmaxtypSee Notes
Copper Cable Interconnect
Printed Circuit Board Interconnect
622320030m Cable3.3CML130
0 to +85$12.24 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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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