WM8740SEDS/V datasheet by Cirrus Logic

WM8740SEDS/V Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the WM8740SEDS/V?
  The recommended power-up sequence is to apply the analog power supply (VDDA) first, followed by the digital power supply (VDDD). This ensures that the analog circuitry is powered up before the digital circuitry.
• How do I optimize the performance of the WM8740SEDS/V in a noisy environment?
  To optimize performance in a noisy environment, ensure that the device is properly decoupled, use a low-ESR capacitor for power supply filtering, and consider using a ferrite bead or common-mode choke to reduce high-frequency noise.
• What is the maximum clock frequency supported by the WM8740SEDS/V?
  The WM8740SEDS/V supports clock frequencies up to 192 kHz, but the maximum frequency may vary depending on the specific application and system requirements.
• How do I configure the WM8740SEDS/V for master clock mode?
  To configure the WM8740SEDS/V for master clock mode, set the MCLK pin to the desired clock frequency, and ensure that the BCLK and LRCLK pins are properly configured to match the clock frequency and audio format.
• What is the recommended layout and routing for the WM8740SEDS/V?
  The recommended layout and routing for the WM8740SEDS/V involves keeping analog and digital signals separate, using a star-grounding scheme, and minimizing signal trace lengths and vias to reduce noise and crosstalk.