PCM1725U Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1725U?
  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 analog output stage for best performance?
  To optimize the analog output stage, ensure that the output impedance is matched to the load impedance, and use a low-pass filter to remove high-frequency noise. Additionally, use a high-quality op-amp with low noise and distortion to buffer the output.
• What is the maximum allowed clock jitter for the PCM1725U?
  The maximum allowed clock jitter for the PCM1725U is 100 ps RMS. Exceeding this limit can result in increased distortion and decreased dynamic range.
• How do I handle the digital output data format?
  The PCM1725U outputs data in a 24-bit, MSB-first, two's complement format. Ensure that your receiving device is configured to accept this format to avoid data corruption or misinterpretation.
• What is the recommended layout and routing for the PCM1725U?
  To minimize noise and interference, keep analog and digital traces separate, use a solid ground plane, and avoid running digital traces near analog inputs. Additionally, use a low-inductance path for the power supply and decouple the power pins with high-quality capacitors.