JAJSHL9A June 2019 – January 2021 ADS125H01
PRODUCTION DATA
The offset calibration word is 24 bits consisting of three 8-bit registers. The offset value is subtracted from the conversion result. The offset value is 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 offset value range, the input signal cannot exceed ±106% of the precalibrated range; otherwise the ADC is overranged. Table 9-8 lists example values of the offset register.
OFCAL[2:0] REGISTER VALUE | CALIBRATED OUTPUT VALUE(1) |
---|---|
000001h | FFFFFFh |
000000h | 000000h |
FFFFFFh | 000001h |