CDC208DW datasheet by Texas Instruments

CDC208DW Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CDC208DW can handle?
  The CDC208DW can handle clock frequencies up to 200 MHz, but it's recommended to limit it to 166 MHz for optimal performance and to avoid potential issues with clock skew and jitter.
• How do I properly terminate the clock input pins?
  The clock input pins (CLKIN/CLKINB) should be terminated with a 50-ohm resistor to ground, and a 0.01-uF capacitor in parallel to filter out high-frequency noise.
• What is the recommended power-up sequence for the CDC208DW?
  The recommended power-up sequence is to apply VCC first, followed by VCCO, and then the clock signal. This ensures proper initialization and prevents potential latch-up conditions.
• How do I handle the output clock skew and jitter?
  To minimize output clock skew and jitter, use a low-jitter clock source, keep the clock distribution network short and symmetrical, and consider using a clock conditioner or jitter attenuator if necessary.
• Can I use the CDC208DW as a clock multiplier?
  Yes, the CDC208DW can be used as a clock multiplier, but it's essential to ensure that the input clock frequency is within the specified range and that the output clock frequency does not exceed the maximum rating of 200 MHz.