Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Also, use short and direct traces for the analog inputs and references.
Use a low-pass filter at the input, and consider using a shielded enclosure. Also, ensure a clean and stable power supply, and use decoupling capacitors close to the device.
The maximum sampling rate of the ADS1243IPWT is 2 kSPS. However, this can be affected by the system clock frequency, and the number of channels being converted.
Yes, the ADS1243IPWT can be used with an external voltage reference. However, ensure that the reference voltage is stable and within the recommended range of 2.5 V to 5.5 V.
The ADS1243IPWT has an internal calibration mechanism. However, if external calibration is required, use a known input voltage and adjust the offset and gain registers accordingly.
ADS1243IPWT datasheet
by Texas Instruments
