HCTL-2017-A00 - Avago Technologies

HCTL-2017-A00 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the signal traces short and away from noise sources. Use a common mode choke or ferrite bead to filter out noise on the power lines.
• How do I ensure reliable operation across the entire temperature range?
  Use a thermal management strategy such as heat sinks, thermal pads, or thermal interfaces to keep the junction temperature below 125°C. Ensure good airflow and avoid blocking airflow around the device.
• What are the considerations for EMI and RFI shielding?
  Use a metal shield or a conductive enclosure to enclose the device. Ensure good contact between the shield and the PCB ground plane. Use EMI filters or common mode chokes on the input/output lines to reduce emissions.
• How do I handle the device's power sequencing requirements?
  Ensure that the power supplies are sequenced correctly, with the analog supply (VCCA) powered up before the digital supply (VCCD). Use a power sequencing controller or a dedicated power management IC to manage the power-up sequence.
• What are the guidelines for layout and routing of the high-speed signals?
  Use controlled impedance traces (50-60 ohms) for high-speed signals. Keep the traces short and away from noise sources. Use a signal integrity analysis tool to optimize the layout and routing.