Q: Can you do calibration on part in the field ?
A: Yes - the part has an infield calibration routine which removes offsets/gains and some switch leakage for extremely accurate performance.
The No Factory Cal and AFE Example chapters cover this in Userguide. The autocalibration routines are automaticallly enabled for all AFE examples in the Software Development Kit.
Q: How long does calibration take ?
A: A full system calibration with the ADC using the Power Supply Rejection filtering ~350 mS.By removing the power supply rejection filtering this can be reduced significantly. See AN-1282 for more details.