INL (integral nonlinearity) is defined as the integral of the DNL (differential nonlinearity) : good INL guarantees good DNL. Some datasheets only specify INL. INL error describes how far away from the ideal transfer function value the measured converter result is. Unlike Gain and Offset Errors, INL and DNL errors can not be calibrated or corrected; they are inherent in the design and manufacturing of the converter. INL refers to the deviation of each individual code from a line drawn from zero through full scale on the graph seen here. The point used as zero occurs 1/2 of a least significant bit (LSB) before the first code transition.