JAJSGG2C October 2018 – June 2019 ADS125H02
The offset calibration word, as listed in Table 10, is 24 bits consisting of three 8-bit registers. The offset value is subtracted from the conversion result. The offset value is in two's-complement format with a maximum positive value equal to 7FFFFFh and a maximum negative value equal to 800000h. A register value equal to 000000h has no offset correction. Although the calibration registers provide a wide range of offset values, the input signal cannot exceed ±106% of the precalibrated range; otherwise the ADC is overranged. Table 11 lists example values of the offset register.
|REGISTER||BYTE ORDER||ADDRESS||BIT ORDER|
|OFCAL[2:0] REGISTER VALUE||OFFSET CALIBRATED OUTPUT VALUE|