The QLx4270-DP is a settable quad receive-side equalizer with extended functionality for DisplayPort applications. The QLx4270-DP compensates for the frequency dependent attenuation of copper cables, allowing operation on ultra-thin 40AWG cable. The small form factor, highly-integrated quad design is ideal for high-density data transmission applications including active copper cable assemblies. Operating on a single 1. 2V power supply, the QLx4270-DP enables per channel throughputs of up to 2. 7Gb/s. The QLx4270-DP uses current mode logic (CML) inputs/outputs and is packaged in a 4mmx7mm 46 lead QFN.


  • Supports data rates up to 2.7Gb/s per lane
  • 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
  • 1.2V supply voltage Benefits
  • Thinner gauge cable
  • Extends cable reach greater than 5x
  • Improved BER


  • DisplayPort (VESA DisplayPort Standard v11a)
  • DisplayPort adaptors and repeaters

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
QLx4270-DP Datasheet Datasheet PDF 426 KB
User Guides & Manuals
EBL4270-EVALZ User Guide Manual PDF 689 KB
QLX4270MDPCxyEVALZ User Guide Manual PDF 700 KB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB