Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Use short, direct traces for analog signals and avoid crossing digital signals over analog signals.
Optimize the ADC's performance by selecting the correct gain, sampling rate, and filter settings for your application. Use the device's built-in calibration features and adjust the input impedance to match your sensor's output impedance.
Use proper shielding, grounding, and filtering techniques to minimize EMI and RFI. Keep the device away from high-frequency sources, and use a common-mode choke or ferrite bead to filter out noise.
Ensure accurate and reliable measurements by calibrating the device regularly, using a high-quality reference voltage, and maintaining a stable power supply. Also, use the device's built-in error detection and correction features.
Use a clean, low-noise power supply with a high power supply rejection ratio (PSRR). Decouple the power supply lines with capacitors, and ensure the power supply voltage is within the recommended range.