SLVSCO4D July 2015 – February 2019 TPS65917-Q1
The GPADC channels are calibrated in the production line using a 2-point calibration method. The channels are measured with two known values (X1 and X2) and the difference (D1 and D2) to the ideal values (Y1 and Y2) are stored in the OTP memory. Figure 5-16 shows the principle of the calibration.
If the measured code is a, the corrected code a' is calculated using Equation 6.
Table 5-10 lists the parameters, X1 and X2, and the register for D1 and D2 required in the calculation for all the channels.