A good PCB layout practice is to keep the analog and digital grounds separate, and to use a solid ground plane to reduce EMI. Additionally, keep the input and output traces short and away from each other to minimize coupling.
Use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) as close as possible to the VCC pin, and a smaller capacitor (e.g., 100nF ceramic) as close as possible to the AVCC pin. Ensure the power supply is clean and regulated, and use a ferrite bead or inductor to filter out high-frequency noise.
The maximum allowed voltage on the analog input pins is VCC + 0.3V, but it's recommended to keep the input voltage within the range of 0V to VCC to ensure proper operation and prevent damage to the device.
The gain of the MAX3031ECSE+T can be set using external resistors. Refer to the datasheet for the gain calculation formula and resistor values. Ensure the resistors are of high precision and low tolerance to maintain accuracy.
The recommended clock frequency for the MAX3031ECSE+T is between 1MHz and 50MHz. However, the optimal clock frequency depends on the specific application and noise requirements. Consult the datasheet and application notes for more information.
MAX3031ECSE+T datasheet
by Maxim Integrated Products
