SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 1337

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
The Programmable Gain Amplifier can be set to gains of 1/2, 1, 2 and 4. The Programmable
Gain Amplifier can be used either for single ended applications or for fully differential
applications.
If ANACH is set in ADC_MR the ADC can apply different gain and offset on each channel. Oth-
erwise the parameters of CH0 are applied to all channels.
The gain is configurable through the GAIN bit of the Channel Gain Register (ADC_CGR) as
shown in
Table 43-6.
To allow full range, analog offset of the ADC can be configured by the OFFSET bit of the Chan-
nel Offset Register (ADC_COR). The Offset is only available in Single Ended Mode.
Table 43-7.
OFFSET Bit
GAIN<0:1>
Table
00
01
10
11
0
1
Gain of the Sample and Hold Unit: GAIN Bits and DIFF Bit.
Offset of the Sample and Hold Unit: OFFSET DIFF and Gain (G)
43-6.
OFFSET (DIFF = 0)
GAIN (DIFF = 0)
(G-1)Vrefin/2
1
1
2
4
0
OFFSET (DIFF = 1)
GAIN (DIFF = 1)
0.5
1
2
2
0
SAM3X/A
SAM3X/A
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