The recommended power-up sequence is to apply VDD first, followed by VDDIO, and then the clock signal. This ensures proper device initialization and prevents latch-up.
To optimize analog performance, ensure that the analog power supply (VDDA) is well-filtered and decoupled, and that the analog ground (AGND) is connected to the digital ground (DGND) at a single point. Additionally, use a low-ESR capacitor for the analog bypass capacitor (CABP).
The maximum allowed clock jitter for the CS43L22 is 500 ps peak-to-peak. Exceeding this limit may result in decreased audio performance or device malfunction.
Yes, the CS43L22 can be used with separate analog and digital power supplies. However, ensure that the analog power supply (VDDA) is well-filtered and decoupled, and that the analog ground (AGND) is connected to the digital ground (DGND) at a single point.
To minimize noise and ensure optimal performance, keep analog and digital signals separate, use a star-ground configuration, and avoid running digital signals near analog signals. Additionally, use a solid ground plane and decouple the power supplies with low-ESR capacitors.
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CS43L22-CNZR Overview
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