34.10.4.1 Performance with the Averaging Digital Feature

Averaging is a feature which increases the sample accuracy. ADC automatically computes an average value of multiple consecutive conversions. The numbers of samples to be averaged is specified by the Number-of-Samples-to-be-Collected bit group in the Average Control register (AVGCTRL.SAMPLENUM[3:0]) and the averaged output is available in the Result register (RESULT).

Table 34-22. Averaging feature
Average NumberConditionsSNR (dB)SINAD (dB)SFDR (dB)ENOB (bits)
1In Differential mode, 1x gain,
VDDANA = 3.0V, VREF = 2.0V, 350 ksps
T = 25°C66658510.5
868668711.4
3270678811.6
12871678811.7