A combination of 10uF and 0.1uF capacitors in parallel, placed as close as possible to the power pins, is recommended for optimal power supply decoupling.
Use a high-quality clock source, such as a crystal oscillator, and ensure the clock signal is clean and stable. Also, make sure to follow the recommended clocking scheme and frequency range specified in the datasheet.
Keep analog and digital signals separate, use separate power planes for analog and digital, and avoid crossing analog and digital signal traces. Also, use a star-configuration for the analog signal traces and keep them as short as possible.
Use a logic analyzer or oscilloscope to capture and analyze the digital signals. Check for correct signal levels, timing, and protocol compliance. Also, verify that the interface is properly configured and that the clock and data signals are properly synchronized.
The CS4385-CQZ has a maximum junction temperature of 150°C. Ensure good airflow, use a heat sink if necessary, and avoid blocking airflow around the device. Also, follow the recommended thermal design and layout guidelines to minimize thermal resistance.
CS4385-CQZ datasheet
by Cirrus Logic
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