2 dsPIC33AK ADC Built-In Calibration Features

The dsPIC33AK ADC has built-in calibration features, including configurable offset calibration. When enabled, the ADC will automatically perform a start-up calibration procedure, including gain and offset calibration. The automatically applied gain error correction may not meet the application's accuracy requirements. ADC performance can be enhanced using the gain error compensation described in the following section. During run time, fine offset calibration can be performed using two methods: either by software request or periodically using scheduling features.

For detailed information on offset calibration, refer to the ADC section of the device-specific data sheet.