A 4-layer PCB with a solid ground plane and a separate analog ground plane is recommended. Keep analog and digital signals separate, and use a common mode filter to reduce noise.
Use a low-pass filter to remove high-frequency noise, and consider using a voltage divider or attenuator to match the input signal amplitude to the ADC's input range.
Use a low-jitter clock source, and consider using a clock buffer or repeater to ensure a clean clock signal. The recommended clock frequency is 100 MHz to 200 MHz.
Use a FIFO or a buffer to handle the high-speed digital output data. Consider using a deserializer or a receiver IC to simplify the data transfer.
Power up the analog supply (AVDD) first, followed by the digital supply (DVDD). Ensure that the analog supply is stable before applying the digital supply.