PAM-4 deployments in high-performance data centers strain copper/PCB signal integrity, forcing trade-offs between cable length, size and cost. Parade’s PS9514 quad-channel linear redriver enhances copper signal integrity for 112Gbps 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 >35GHz 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 112Gbps PAM-4 (56Gbaud)
• Wideband equalization handles 64b/66b, 128b/130b, 256b/257b coded data
 Highly linear
• Works with PAM-4 (112Gb/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
• 800Gbps Ethernet using 8-lane PAM-4
• Data center and AI interconnect architectures