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).
| Average Number | Conditions | SNR (dB) | SINAD (dB) | SFDR (dB) | ENOB (bits) |
|---|---|---|---|---|---|
| 1 | In Differential mode, 1x gain, VDDANA = 3.0V, VREF = 2.0V, 350 ksps T = 25°C | 66 | 65 | 85 | 10.5 |
| 8 | 68 | 66 | 87 | 11.4 | |
| 32 | 70 | 67 | 88 | 11.6 | |
| 128 | 71 | 67 | 88 | 11.7 |