CS4382A-CQZ datasheet by Cirrus Logic

CS4382A-CQZ Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CS4382A-CQZ?
  The recommended power-up sequence is to apply analog power (AVDD) first, followed by digital power (DVDD), and then clock and data inputs. This ensures proper device initialization and prevents potential latch-up conditions.
• How do I optimize the CS4382A-CQZ's analog performance?
  To optimize analog performance, ensure that the analog power supply (AVDD) is well-regulated and decoupled, and that the analog input signals are properly terminated and filtered. Additionally, use a low-jitter clock source and ensure that the device is operated within its recommended operating conditions.
• What is the maximum allowable clock jitter for the CS4382A-CQZ?
  The maximum allowable clock jitter for the CS4382A-CQZ is 50 ps RMS. Exceeding this limit may result in decreased device performance and increased distortion.
• How do I configure the CS4382A-CQZ for master clock mode?
  To configure the CS4382A-CQZ for master clock mode, connect the MCLK pin to a stable clock source, and set the M/S pin high. Ensure that the clock frequency is within the recommended range (256 fs to 512 fs) and that the clock signal is properly terminated.
• What is the recommended layout and routing for the CS4382A-CQZ?
  To minimize noise and ensure optimal performance, keep analog and digital signals separate, use a solid ground plane, and route clock and data signals away from analog signals. Additionally, use short, direct traces for power and ground connections.