3.2Gbps Adaptive Equalizer

Industry's Smallest 3.2Gbps Adaptive Cable Equalizer

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The MAX3801 is a +3.3V adaptive cable equalizer designed for coaxial and twin-axial cable point-to-point communications applications. 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 MAX3801 is available in a 24-pin QFN package with exposed pad and consumes only 125mW at +3.3V.
MAX3801: Typical Application Circuit MAX3801: Typical Application Circuit Enlarge+

Key Features

  • Single +3.3V Operation
  • Typical Power Dissipation = 125mW at +3.3V
  • Data Rates Up to 3.2Gbps
  • Equalizer Automatically Adjusts for Different Cable Lengths
  • 0dB to 30dB Equalization at 1.6GHz (3.2Gbps)
  • Loss-of-Signal (LOS-bar) 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 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$8.62 @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.
Product Reliability Reports: MAX3801.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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