DATASHEET
QLx4270-DP FN6972
Rev 2.00
March 3, 2010 DisplayPort Lane Extender
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. Features The small form factor, highly-integrated quad design is
ideal for high-density data transmission applications
including active copper cable assemblies. Four equalizers in a 4mmx7mm QFN package for
straight route-through architecture and simplified
routing 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. Each equalizer boost is independently pin
selectable and programmable Supports data rates up to 2.7Gb/s per lane Low power (78mW per channel) Low latency (<500ps) 1.2V supply voltage Applications DisplayPort (VESA DisplayPort Standard v1.1a) DisplayPort adaptors and repeaters Benefits Thinner gauge cable Extends cable reach greater than 5x Improved BER Typical Application Circuit
1.2V 6.04k 10nF 0.1ВµF Tx1[P,N] 0.1ВµF Tx2[P,N] Display Port Source 100pF
VDD Twin Ax 0.1ВµF Tx4[P,N] IN2[P,N] OUT1[P,N]
OUT2[P,N] 0.1ВµF
0.1ВµF Rx1[P,N]
Rx2[P,N] QLx4270-DP …
