5.1 Graph With ADC Reference 3.3V

Figure 5-1. VDD Selection 3V3

The Data Visualizer graph with VDD = 3.3V and ADC input signal VDD/2 = 1.65V is as shown in Figure 5-2. The red colored signal is the noisy input signal (ADRES value), the green colored signal is the filtered signal (ADFLTR value).

Figure 5-2. Graph With DC 1.65V and ADC Reference 3.3V

From the graph, it can be seen that the ADC count value for a non-filtered signal (noisy input signal) is ~ 440 - 580.

If the signal is zoomed in, it is illustrated in Figure 5-3.

Figure 5-3. Zoomed In Graph With DC 1.65V and ADC Reference 3.3V

It can be seen from Figure 5-3 that the ADC count value for the filtered signal is ~ 512 - 532.