SAMA5D2 Series

66.9.4.1 Differential Mode (12-bit mode)

A differential input voltage V_IN= V_INP- V_INN can be applied between two selected differential pins, e.g. ADC0_AD0 and ADC0_AD1. The ideal code C_i is calculated by using the following formula and rounding the result to the nearest positive integer.

$C_{i} = \frac{2047}{V_{ADVREF}} \times V_{IN}$

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_ADVREF = 3V.

Table 66-32. Input Voltage Values in Differential Mode, Non-signed Output
Signed C_i	V_IN
-2048	-3
0	0
2047	3

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