Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. The datasheet provides a recommended layout and routing guide, but it's also recommended to consult with a PCB design expert to ensure optimal performance.
To optimize performance in a noisy environment, use a low-pass filter on the analog input, ensure a clean power supply, and use a ground plane to reduce electromagnetic interference (EMI). Additionally, consider using shielding and filtering on the digital outputs to reduce electromagnetic radiation.
The ADS8867IDGS has a maximum sampling rate of 1 MSPS (million samples per second), but this can be affected by the system clock frequency, analog input frequency, and other factors. Consult the datasheet and application notes for more information on achieving the maximum sampling rate.
Calibration involves adjusting the offset and gain of the ADC to ensure accurate conversions. The datasheet provides a calibration procedure, which involves applying a known input voltage and adjusting the offset and gain registers accordingly. It's recommended to perform calibration at power-up and periodically during operation.
The ADS8867IDGS has a typical power consumption of 35 mW at 1 MSPS. To reduce power consumption, consider using the power-down mode, reducing the sampling rate, and optimizing the system clock frequency. Additionally, consider using a low-power mode or shutdown mode when the ADC is not in use.
ADS8867IDGS datasheet
by Texas Instruments
