The QLX4600-S30 is a settable quad receive-side equalizer with extended functionality for advanced protocols operating with line rates up to 6. 25Gb/s such as DisplayPort v1. 2 (HBR1/2), InfiniBand (SDR and DDR), PCI Express and 10GBase-CX4. The QLX4600-S30 compensates for the frequency dependent attenuation of copper twin-axial cables, extending the signal reach up to 30m on a 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 QLX4600-S30 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 QLX4600-S30 enables per channel throughputs of up to 6. 25Gb/s while supporting lower data rates including 5, 4. 25, 3. 125 and 2. 5Gb/s. The QLX4600-S30 uses Current Mode Logic (CML) inputs/outputs and is packaged in a 4mmx7mm 46 Ld TQFN. Individual channel power-down support is included for PCI Express applications.


  • Supports data rates up to 6.25Gb/s
  • Low power (78mW per channel)
  • Low latency (<500ps)
  • Four equalizers in a 4mmx7mm TQFN 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
  • Channel power-down for each equalizer
  • 1.2V supply voltage


  • QSFP active copper cable modules
  • InfiniBand (SDR and DDR)
  • 10GBase-CX4
  • PCI Express Gen 1 and 2
  • XAUI and RXAUI
  • SAS (10 and 20)
  • High-speed active cable assemblies
  • High-speed printed circuit board (PCB) traces

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type Buy Sample
Active QFN Reel
Active QFN Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
QLx4600-S30 Datasheet Datasheet PDF 1.63 MB
User Guides & Manuals
EBL4600CI-EVALZ User Guide Manual PDF 827 KB
EBL4600CI-EVALZ Design Files Design File ZIP 1.13 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB

Boards & Kits

Part Number Title Type Company
EBL4600CI-EVALZ Quad Lane Extender Evaluation Board Evaluation Renesas
EBL4600CL-EVALZ Quad Lane Extender Evaluation Board Evaluation Renesas