167
9140CINDCO02/10
ATA8741
Notes: 1. See Table 25-5 on page 168 for details.
2. Temperature Measurement on page 165
3. For offset calibration only .See Table 25-5 on page 168 and ADC Operation on page 155
See Table 25-5 on page 168 for details of selections of differential input channel selections as
well as selections of offset calibration channels. MUX0 bit works as a gain selection bit for differ-
ential channels shown in Table 25-5 on page 168. When MUX0 bit is cleared (0) 1x gain is
selected and when it is set (1) 20x gain is selected. For normal differential channel pairs MUX5
bit work as a polarity reversal bit. Togling of the MUX5 bit exhanges the positive and negative
channel other way a round.
For offset calibration purpose the offset of the certain differential channels can be measure by
selecting the same input for both negative and positive input. This calibration can be done for
ADC0, ADC3 and ADC7. ADC Operation on page 155 describes offset calibration in a more
detailed level.
Table 25-4. Single Endid Input channel Selections.
Single Ended Input
MUX5..0
ADC0 (PA0)
000000
ADC1 (PA1)
000001
ADC2 (PA2)
000010
ADC3 (PA3)
000011
ADC4 (PA4)
000100
ADC5 (PA5)
000101
ADC6 (PA6)
000110
ADC7 (PA7)
000111
Reserved for differential channels
(1)
001000 - 011111
0V (AGND)
100000
1.1V (I Ref)
100001
ADC8
(2)
100010
Reserved for offset calibration
(3)
100011 - 100111
Reserved for reversal differential channels
(1)
101000 - 111111
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