PCM1681PWP datasheet by Texas Instruments

PCM1681PWP Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1681PWP?
  The recommended power-up sequence is to apply VCC first, followed by VDD, and then the analog power supplies (VAA and VDA). This ensures proper device operation and prevents latch-up.
• How do I optimize the PCB layout for the PCM1681PWP?
  To optimize the PCB layout, keep analog and digital signals 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 PCM1681PWP?
  The maximum allowed clock jitter for the PCM1681PWP is 100 ps RMS. Exceeding this value may affect the device's performance and cause errors.
• Can I use the PCM1681PWP in a 3.3V system?
  Yes, the PCM1681PWP can operate in a 3.3V system. However, the device's performance may be affected, and the maximum sampling frequency may be reduced. Consult the datasheet for specific details.
• How do I handle the PCM1681PWP's digital output data?
  The PCM1681PWP's digital output data is in MSB-first, two's complement format. Ensure that your receiving device can handle this format, and consider using a FIFO or buffer to handle the data stream.