CDCS502PW datasheet by Texas Instruments

CDCS502PW Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the CDCS502PW to minimize noise and ensure optimal performance?
  A good PCB layout for the CDCS502PW involves keeping the input and output traces separate, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I ensure the CDCS502PW is properly powered and what are the power sequencing requirements?
  The CDCS502PW requires a single 1.8V power supply. It's recommended to use a low-dropout linear regulator (LDO) to power the device. Power sequencing is not critical, but it's recommended to power up the device after the power supply has stabilized.
• What is the maximum clock frequency that the CDCS502PW can support?
  The CDCS502PW can support clock frequencies up to 100 MHz. However, the maximum frequency may vary depending on the specific application and the quality of the clock signal.
• How do I configure the CDCS502PW for different clock modes and what are the trade-offs?
  The CDCS502PW can be configured for different clock modes using the CFG0-2 pins. The device can be configured for crystal oscillator mode, external clock mode, or internal oscillator mode. The trade-offs between these modes include power consumption, accuracy, and flexibility.
• What are the key considerations for selecting the external crystal oscillator for the CDCS502PW?
  When selecting an external crystal oscillator for the CDCS502PW, consider the frequency tolerance, load capacitance, and equivalent series resistance (ESR) of the crystal. A crystal with a frequency tolerance of ±20 ppm and a load capacitance of 10-20 pF is recommended.