ZHCSTG5 October 2023 ADC12QJ1600-SEP
PRODUCTION DATA
Table 6-52 lists the parameters that can be trimmed and the associated registers.
TRIM PARAMETER | TRIM REGISTER | NOTES |
---|---|---|
Band-gap reference | BG_TRIM | Measurement on BG output pin. |
Input termination resistance | RTRIM_x, where x = A for INA±, B for INB±, etc. | The device must be powered on with a clock applied. |
Input offset voltage | OFSxy, where x = ADC core (0, 1, 2, 3, 4, or 5) and y = A for INA±, B for INB±, etc. or omitted (for ADC cores 0, 1, 4 and 5) | A different trim value is allowed for each ADC core (0, 1, 2, 3, 4 or 5) to allow more consistent offset performance in background calibration mode. Use CAL_OS with CAL_BG = 1 to get the trim values from these registers. |
Analog input gain | GAINxy, where x = ADC core (0, 1, 2, 3, 4, or 5) and y = A for INA±, B for INB±, etc. or omitted (for ADC cores 0, 1, 4 and 5) | Use this trim to match the gain for each ADC core. These registers are not affected by the calibration process. |
Full-scale input voltage | FS_RANGE | Full-scale input voltage adjustment that applies to all inputs. Use GAINxy to match the gain for each input. |