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.
To optimize the performance of the ADC, ensure that the analog input signal is properly filtered and buffered, and that the ADC clock frequency is set to the recommended value. Additionally, ensure that the analog power supply is well-regulated and decoupled.
The digital filter is used to remove noise and artifacts from the digital output signal. The filter can be configured using the device's control registers. The recommended filter settings depend on the specific application and sampling frequency.
The WM8740 can be clocked from an external source using the MCLK input. Ensure that the external clock source is stable and meets the recommended frequency and jitter specifications.
To minimize noise and interference, keep analog and digital signals separate and use separate power planes and ground planes. Use short, direct traces for analog signals, and avoid crossing digital signals over analog signals.
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