Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital traces separate. Also, use a low-ESR capacitor for the AVDD pin and a 0.1uF capacitor for the REF pin.
Optimize the ADC's performance by selecting the correct clock frequency, setting the correct gain and offset, and using the correct input range. Also, consider using the built-in calibration feature to improve accuracy.
The maximum sampling rate of the ADS7864Y/250 is 250 kSPS. However, this rate can be affected by the clock frequency, input range, and gain settings.
The ADS7864Y/250 outputs 16-bit data in a serial format. You can use a microcontroller or FPGA to receive and process the data. Make sure to synchronize the data transfer with the ADC's conversion rate.
The ADS7864Y/250 has a typical power consumption of 15 mW at 250 kSPS. To reduce power consumption, consider using the power-down mode, reducing the clock frequency, or using a lower supply voltage.
ADS7864Y/250 datasheet
by Texas Instruments
