CDCV850DGGR datasheet by Texas Instruments

CDCV850DGGR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CDCV850DGGR?
  The recommended power-up sequence is to apply VCC first, followed by VCCIO, and then the clock signal. This ensures proper initialization and prevents potential latch-up conditions.
• How do I ensure the CDCV850DGGR is in a known state after power-up?
  You can use the POR (Power-On Reset) pin to reset the device after power-up. The POR pin is active-low, so connect it to a pull-up resistor and a capacitor to ground to create a power-on reset circuit.
• What is the maximum clock frequency supported by the CDCV850DGGR?
  The CDCV850DGGR supports clock frequencies up to 850 MHz. However, the actual frequency limit may depend on the specific application, PCB layout, and signal integrity.
• How do I optimize the CDCV850DGGR for low power consumption?
  To optimize for low power consumption, use the lowest possible clock frequency, disable unused features, and use the power-down mode when the device is not in use. Additionally, consider using a lower voltage supply and optimizing the PCB design for minimal power consumption.
• What is the recommended termination scheme for the CDCV850DGGR?
  The recommended termination scheme is to use a 50-ohm series resistor at the output of the clock driver, followed by a 50-ohm parallel terminator at the input of the receiver. This ensures proper signal integrity and minimizes reflections.