16.9.2 Conversion Formula for Unipolar

Input Ranges Input voltage = (A/D value + 32768) / 65536 Full-scale input voltage

Example: For unipolar input range 0-5V, full-scale input voltage = 5V.

For an A/D value of 17761: Input voltage = (17761 + 32768) / 65536 5V = 3.855V

For a unipolar input range, 1 LSB = 1/65536 * Full-scale voltage, in this case 5V/65536 = 76uV (0.000076V).

The table below shows the relationship between A/D code and input voltage for a bipolar input range (VFS = Full scale input voltage).

A/D Code	Input Voltage Symbolic Formula	Input Voltage for +/- 5V Range
-32786	0V	0V
-32767	1LSB(Vfs/65536)	0.000076V
...	...	...
-1	Vfs/2-1LSB	2.4999V
0	Vfs/2	2.5000V
1	Vfs/2+1LSB	2.5001
...	...	...
32767	Vfs-1LSB	4.9998V