CDCV857BDGGR datasheet by Texas Instruments

CDCV857BDGGR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CDCV857BDGGR?
  The recommended power-up sequence is to apply VCC first, followed by VDD, and then the input clock signal. This ensures proper initialization and prevents potential latch-up conditions.
• How do I handle the output clock signal when the input clock signal is not present?
  When the input clock signal is not present, the output clock signal will be in a high-impedance state. It's recommended to use a pull-down resistor or a clock buffer with a built-in pull-down to ensure a stable output clock signal.
• What is the maximum input clock frequency that the CDCV857BDGGR can handle?
  The CDCV857BDGGR can handle input clock frequencies up to 200 MHz. However, the maximum frequency may vary depending on the specific application, PCB layout, and signal integrity.
• How do I minimize jitter and phase noise in the output clock signal?
  To minimize jitter and phase noise, ensure a low-jitter input clock signal, use a high-quality crystal oscillator, and follow proper PCB layout and routing guidelines. Additionally, consider using a clock jitter cleaner or a phase-locked loop (PLL) to further reduce jitter and phase noise.
• What is the recommended operating temperature range for the CDCV857BDGGR?
  The recommended operating temperature range for the CDCV857BDGGR is -40°C to 85°C. However, the device can operate up to 125°C with reduced performance and reliability.