57.8.4.2 Single-ended Mode (12-bit mode)

A single input voltage V_IN can be applied to selected pins, e.g. AFE0_AD0 or AFE0_AD1. The ideal code C_i is calculated using the following formula and rounding the result to the nearest positive integer.

The single-ended ideal code conversion formula is:

C_{i} = \frac{4096}{V_{VREFP}} \times (V_{IN} - V_{DAC}) \times Gain + 2047

For the other resolution defined by RES, the code C_i is extended to the corresponding resolution.

The table below is a computation example for the above formula, where V_VREFP = 3V:

Table 57-32. Input Voltage Values in Single-ended Mode
C_i		Gain
Signed	Nonsigned	1	2	4
-2048	0	0	0.75	1.125
0	2047	1.5	1.5	1.5
2047	4095	3	2.25	1.875