Overview

The QLx4300-S45 is a settable quad receive-side equalizer with extended functionality for advanced protocols operating with line rates up to 3. 125Gb/s such as InfiniBand (SDR) and 10GBase-CX4. The QLx4300-S45 compensates for the frequency dependent attenuation of copper twin-axial cables, extending the signal reach up to 40m on 24AWG cable. The small form factor, highly-integrated quad design is ideal for high-density data transmission applications including active copper cable assemblies. The four equalizing filters within the QLx4300-S45 can each be set to one of 32 compensation levels, providing optimal signal fidelity for a given media and length. The compensation level for each filter can be set by either (a) three external control pins or (b) a serial bus interface. When the external control pins are used, 18 of the 32 boost levels are available for each channel. If the serial bus is used, all 32 compensation levels are available. Operating on a single 1. 2V power supply, the QLx4300-S45 enables per channel throughputs of up to 3. 125Gb/s while supporting the lower data rates of 2. 5Gb/s and 1. 5Gb/s. The QLx4300-S45 uses current mode logic (CML) inputs/outputs and is packaged in a 4mmx7mm 46 lead QFN. Individual lane impedance select support is included for module applications.

QLX4300-S45 Functional Diagram
QLX4300-S45 Functional Diagram
  • Supports data rates up to 3.125Gb/s
  • Low power (78mW per channel)
  • Low latency (<500ps)
  • Four equalizers in a 4mmx7mm QFN package for straight route-through architecture and simplified routing
  • Each equalizer boost is independently pin selectable and programmable
  • Beacon signal support and line silence preservation
  • 1.2V supply voltage
  • Individual channel power-down (impedance select) Benefits
  • Thinner gauge cable
  • Extends cable reach greater than 3x
  • Improved BER

Applications

  • InfiniBand (SDR)
  • 10GBase-CX4
  • PCI Express (Gen 1)
  • DisplayPort
  • XAUI
  • SAS (10)
  • High-speed active cable assemblies
  • High-speed printed circuit board (PCB) traces

Documentation

= Featured Documentation
Type Title Date
Datasheet
QLx4300-S45 Datasheet
PDF 2.58 MB
Brochure
Analog ICs Brochure
PDF 5.20 MB 日本語
End Of Life Notice
PLC21060 - End of Life Notice
PDF 603 KB
Manual - Development Tools
EBL4300CI-EVALZ User Guide
PDF 691 KB
4 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Buy / Sample
    Part Number
    QLX4300SIQSR
    circleObsolete
    memory
    spa
    view_in_ar
    		QFN Reel
    QLX4300SIQT7
    circleObsolete
    memory
    spa
    view_in_ar
    		QFN Reel
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