A 4-layer PCB with a solid ground plane and a separate analog ground plane is recommended. Keep analog and digital traces separate, and use a star topology for power and ground connections.
Use a low-jitter clock source (<100 ps RMS) and ensure the clock signal is properly terminated. Use a clock frequency that is a multiple of the sampling frequency to minimize jitter.
Use a combination of ceramic and electrolytic capacitors (e.g., 100 nF, 1 μF, and 10 μF) placed close to the device. Ensure that the capacitors are connected to the correct power pins and that the layout is optimized for low inductance.
Use a FIFO or a buffer to handle the output data, and implement error detection and correction mechanisms such as CRC or checksum. Ensure that the data is properly synchronized and formatted for the downstream device.
Perform a full-scale calibration after power-up, and repeat as needed based on temperature changes or other environmental factors. Use the device's built-in calibration modes and follow the recommended calibration sequence.
ADS4126IRGZT datasheet
by Texas Instruments
