Datasheet

1051
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
To allow full range, analog offset of the ADC can be configured by the OFFSET bit of the Channel Offset Register
(ADC_COR). The Offset is only available in Single Ended Mode.
Figure 42-7. Analog Full Scale Ranges in Single Ended/Differential Applications Versus Gain and Offset
Table 42-7. Offset of the Sample and Hold Unit: OFFSET DIFF and Gain (G)
OFFSET Bit OFFSET (DIFF = 0) OFFSET (DIFF = 1)
00
0
1(G-1)Vrefin/2
VIN+
gain=0.5
gain=1
gain=2
gain=4
single ended
se0fd1=0
fully differential
se0fd1=1
same as
gain=1
same as
gain=2
0
vrefin
(½)vrefin
vrefin
0
(¾)vrefin
(¼)vrefin
(½)vrefin
vrefin
0
(5/8)vrefin
(3/8)vrefin
(½)vrefin
offset=0offset=1
offset=0offset=1
(¼)vrefin
vrefin
0
(5/8)vrefin
(3/8)vrefin
(½)vrefin
(¼)vrefin
(¾)vrefin
(1/8)vrefin
(00)
(01)
(10)
(11)
VIN+
VIN+
VIN+
VIN+
VIN+
VIN+
VIN-
VIN+
VIN-
VIN+
VIN-
VIN+
VIN-