CDCF5801ADBQR datasheet by Texas Instruments

CDCF5801ADBQR Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the CDCF5801ADBQR?
  The recommended power-on sequence is to apply VCC first, followed by VDD, and then the clock signal. This ensures proper initialization and prevents latch-up.
• How do I handle the clock signal when using the CDCF5801ADBQR in a system with multiple clock domains?
  When using the CDCF5801ADBQR in a system with multiple clock domains, it's essential to ensure that the clock signal is properly synchronized and buffered to prevent clock domain crossing issues. Use a clock buffer or a clock domain crossing circuit to synchronize the clock signal.
• What is the maximum frequency of operation for the CDCF5801ADBQR?
  The maximum frequency of operation for the CDCF5801ADBQR is 100 MHz. However, the actual operating frequency may be limited by the system's clock signal quality, PCB layout, and other factors.
• How do I implement a reset signal for the CDCF5801ADBQR?
  The CDCF5801ADBQR does not have a dedicated reset pin. Instead, use the asynchronous reset input (RST) to reset the device. The RST pin should be connected to a pull-up resistor and a capacitor to ensure a clean reset signal.
• What is the recommended termination scheme for the CDCF5801ADBQR's output signals?
  The recommended termination scheme for the CDCF5801ADBQR's output signals is to use a series resistor (Rs) and a parallel capacitor (Cp) to match the transmission line impedance. The values of Rs and Cp depend on the specific system requirements and PCB layout.