PCM1681PWPR datasheet by Texas Instruments

PCM1681PWPR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1681PWPR?
  The recommended power-up sequence is to apply VCC first, followed by VDD, and then the analog power supplies (VA and VB). This ensures proper device operation and prevents latch-up.
• How do I optimize the PCB layout for the PCM1681PWPR?
  To optimize the PCB layout, keep analog and digital traces separate, use a solid ground plane, and place decoupling capacitors close to the device. Also, ensure that the analog and digital power supplies are separated and filtered properly.
• What is the maximum allowed clock jitter for the PCM1681PWPR?
  The maximum allowed clock jitter for the PCM1681PWPR is 100 ps RMS. Exceeding this value may affect the device's performance and cause errors.
• Can I use the PCM1681PWPR in a 3.3V system?
  Yes, the PCM1681PWPR can operate in a 3.3V system. However, ensure that the analog power supplies (VA and VB) are also set to 3.3V, and adjust the voltage references accordingly.
• How do I troubleshoot issues with the PCM1681PWPR?
  To troubleshoot issues, start by verifying the power-up sequence, clock signal integrity, and analog power supply voltages. Then, check the device's configuration registers and analog output signals using an oscilloscope or logic analyzer.