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.
To optimize performance in noisy environments, use a low-pass filter at the input, keep the analog and digital grounds separate, and use a shielded cable for the analog input. Additionally, consider using a common-mode filter or a differential amplifier to reduce noise.
The maximum sampling rate of the ADS1675IPAGR is 250 kSPS. However, the actual sampling rate may be limited by the system's clock frequency, analog input bandwidth, and digital interface.
The ADS1675IPAGR has an internal calibration circuit that can be enabled through the CAL pin. The calibration process involves shorting the input pins to the internal reference voltage, and then adjusting the offset and gain registers to achieve optimal performance.
The power consumption of the ADS1675IPAGR is typically around 35 mW at 3.3 V and 250 kSPS. To reduce power consumption, consider using a lower supply voltage, reducing the sampling rate, or using the device's power-down mode.