Engineers must evaluate entire signal chain for 2.5G/5G Ethernet designs

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Designing for 2.5G and 5G Ethernet speeds requires moving beyond simple component speed ratings. Engineers must analyze the complete signal path, including the PHY, magnetics, PCB, connectors, and cabling. Component selection starts with the target PHY's specific magnetics requirements and reference design. Signal integrity validation is critical, requiring careful review of return-loss conventions and frequency responses. The final component choice must also meet the system's operating environment and features like Power over Ethernet.

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