CDLL4148e3 - Microsemi Corporation

CDLL4148e3 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the CDLL4148E3?
  Microsemi recommends a 4-layer PCB with a solid ground plane, and a separate power plane for the VCC and VEE pins. The input and output tracks should be kept short and away from noise sources. A detailed layout guide is available in the application note AN-803.
• How do I ensure the CDLL4148E3 is properly biased for optimal performance?
  The CDLL4148E3 requires a dual power supply with VCC = 3.3V and VEE = -3.3V. The VREF pin should be connected to a 1.2V voltage source, and the VCC and VEE pins should be decoupled with 0.1uF capacitors. A 1kΩ resistor should be connected between the VREF and VCC pins.
• What is the maximum clock frequency that the CDLL4148E3 can handle?
  The CDLL4148E3 can handle clock frequencies up to 1.5 GHz. However, the maximum frequency may vary depending on the specific application and PCB layout. It is recommended to consult the application note AN-803 for more information.
• How do I troubleshoot issues with the CDLL4148E3, such as output jitter or phase noise?
  To troubleshoot issues with the CDLL4148E3, it is recommended to use a high-speed oscilloscope to measure the output signal. Check for proper power supply decoupling, and ensure that the input clock signal is clean and stable. Consult the application note AN-803 for more troubleshooting tips.
• Is the CDLL4148E3 radiation-hardened for use in space or high-reliability applications?
  Yes, the CDLL4148E3 is radiation-hardened and suitable for use in space and high-reliability applications. It is designed to meet the requirements of NASA's EEE-INST-002 and MIL-STD-883 standards.