PCM1808PWG4 datasheet by Texas Instruments

PCM1808PWG4 Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1808PWG4?
  The recommended power-up sequence is to apply VCC first, followed by VREF, and then the clock signal. This ensures proper initialization of the device.
• How do I optimize the analog input circuitry for best performance?
  Use a low-pass filter with a cutoff frequency below 20 kHz to remove high-frequency noise, and ensure the input impedance is matched to the analog source. Also, use a buffer amplifier if the source impedance is high.
• What is the maximum allowed clock jitter for the PCM1808PWG4?
  The maximum allowed clock jitter is 100 ps RMS. Exceeding this value may affect the ADC's performance and increase distortion.
• Can I use the PCM1808PWG4 in a multi-channel audio application?
  Yes, the PCM1808PWG4 can be used in a multi-channel audio application by using multiple devices or by using a single device with a multiplexer to switch between channels.
• How do I ensure proper grounding and shielding in my PCB design?
  Use a solid ground plane, keep analog and digital grounds separate, and use shielding to minimize electromagnetic interference (EMI). Also, ensure that the PCB layout is optimized for minimal noise coupling.