MAX24101

NOT RECOMMENDED FOR NEW DESIGNS

15Gbps Octal Linear Equalizer

Conserves Space and Power While Extending Reach in Channels Up to 15Gbps

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • 1Gbps to 15Gbps Linear EQ
  • Increases High-Frequency Signal Level To Help Rx DFE Achieve BER Goals
  • Lower Power, Lower Cost, And Smaller Board Footprint Than CDR Solutions
  • Transparent-to-Link Training, OOB And Idle
  • Plug and Play—Set Control Pins (All Channels Set the Same) or Independent Control of Each Channel through I2C Bus
  • I2C Daisy Chain For Addressing Up to 63 ICs
  • Selectable EQ Peaking Spanning +6dB to +19dB at 7.5GHz
  • Selectable Flat Gain Spanning -2.9dB to +1.7dB
  • Selectable Output Linear Swing Spanning 700mVP-P to 1000mVP-P
  • Low Input-Referred Noise < 1mVRMS
  • Data-Rate and Coding Agnostic
  • Input Return Loss Better Than 16dB Typical Up to 7.5GHz
  • Power-Down Mode Saves Power When Not In Use
  • 4mm x 13mm FCLGA Package
  • Single 2.5V Supply
  • 131mW Per Channel Power Dissipation with a 700mVP-P Output

The MAX24101 restores high-frequency signal level at decision-feedback equalizer (DFE) receiver for high-loss backplane and cable channels. This permits the DFE receiver to meet BER goals. At 15Gbps, the MAX24101 can operate in channels with FR4 and cable HF loss more of than 30dB at 7.5GHz. The linear transfer function is transparent to Adaptive DFE equalizers, permitting DFE adaptation to track temperature and changing channel conditions.
Together with the DFE, integrated into Serializer/Deserializer (SERDES), the device adds increased margin rather than full signal regeneration. Unlike conventional equalizers with limiting output stages, the device preserves the linear channel characteristics, allowing the DFE to linearly operate over the entire channel. This permits extending total channel reach and/or improving signal-to-noise ratio (SNR). The device typically compensates for up to 19dB of the total loss in a long channel, effectively reducing the channel length seen by the DFE receiver.
The device has 8 channels and is packaged in a space-saving, 4mm x 13mm, FCLGA package.

Applications

  • 12.5Gbps Quad XAUI Interconnect
  • 12Gbps SAS III
  • 14Gbps 16G Fiber Channel
  • 1Gbps to 15Gbps High-Speed Backplanes and Cables
MAX24101
15Gbps Octal Linear Equalizer
MAX24101 Functional Diagram MAX24101 Application Diagram MAX24101 Pin Configuration
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Documentation

Data Sheet 1

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