4.2.6 Analog Reference

An adjustable voltage reference is implemented on the kit to have a reference for the ADC or DAC. The reference can be adjusted with the on-board multiturn trimmer potentiometer. Next to the potentiometer, a 2-pin header is available to measure the reference voltage for the AREF pin of the SAM4S. The voltage output range for the reference is 0V - 3.36V.