PAM-4 deployments in high-performance data centers strain copper/PCB signal integrity, forcing trade-offs between cable length, size and cost. Parade’s PS9524 quad-channel linear redriver enhances copper signal integrity for 224Gbps PAM-4, offering a better alternative to short bulky copper or costly optical interconnects.

Compact and low-power, it fits standard form-factor metal shells (QSFP, OSFP-XD etc.) without extra heat sinks, ideal for active cables and on-board use to extend PCB trace lengths. Boasting >60GHz peak equalization, it supports up to 3m copper cables, enabling thinner, longer cabling while meeting strict signal standards.

Its high linearity preserves line rate adjustment, transmit pre-emphasis and other dynamics, remaining transparent to system link training algorithms.

Functional Block Diagram

Key Features

  • Versatile EQ
  • Quad channel equalization
  • Supports line rates up to 224Gbps PAM-4 (112Gbaud)
  • Wideband equalization handles 64b/66b, 128b/130b, 256b/257b coded data
  • Highly linear
  • Works with PAM-4 (224Gb/s) signals
  • Allows the receiver EQ to adapt and further equalize the signal
  • Preserves effects of transmit pre-emphasis adjustments
  • FEC compatible
  • No time needed to adjust for dynamic rate changes
  • Compact Package
  • Compact 2.7 x 5.8 mm, 57-pin CSP
  • Quad channel package ideal for top/bottom routing on QSFP, QSFP-DD, OSFP, OSFP-XD, and FPIO modules
  • Octal channel available upon request
  • Low Power
  • Operates off a single 3.3V power supply
  • Each channel has independent equalization settings and standby control
  • Low active and standby power

Applications

  • Active copper cables (ACC)
  • High-speed backplane and PCB trace extension
  • 1600Gbps Ethernet using 8-lane PAM-4
  • Data center and AI interconnect architectures