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MAX24104：15Gbps Quad Linear Equalizer

Conserves Cost, Space, and Power while Extending Signal Reach in Channels Up to 15Gbps

The MAX24104 restores high-frequency signal level at the decision-feedback equalizer (DFE) receiver for high-loss backplane and cable channels. This permits the DFE receiver to meet BER goals. At 15Gbps, the MAX24104 can operate in channels with FR4 and cable HF loss of more 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 operate linearly 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 four channels and is packaged in a space-saving, 4mm x 6.5mm, FCLGA package.

Key Features Low Power Consumption Reduces Operating Cost Single 2.5V Supply 131mW Per Channel (typ) at 700mVP-P Output Lower Power, Lower Cost, and Smaller Board Footprint than CDR Solutions Linear Performance for Greater System Flexibility 1Gbps to 15Gbps Linear Equalization Increases High-Frequency Signal Level to Help Rx DFE Achieve BER Goals Selectable Output Linear Swing from 700mVP-P to 1000mVP-P Input Return Loss Better than 16dB Up to 7.5GHz Adjustable Features for Greater Flexibility Selectable EQ Peaking Spanning +6dB to +19dB at 7.5GHz Selectable Flat Gain Spanning -2.9dB to +1.7dB Integration Allows Greater Design Flexibility I²C Daisy-Chain for Addressing Up to 63 ICs Plug and Play – Set Control Pins (All Channels Set the Same) or Independent Control of Each Channel through I²C Bus Transparent to Link Training, OOB and Idle and Data-Rate and Coding Agnostic 4mm x 6.5mm FCLGA Package

MAX24104: Typical Application Circuit Applications/Uses 12.5Gbps Quad XAUI Interconnect 12Gbps SAS III 14Gbps 16G Fiber Channel 1Gbps to 15Gbps High-Speed Backplanes and Cables

DataSheet

Parametrics

Quality and Environmental Data

• MAX24104.pdf

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