MAX1401 Datasheet, PDF (20/36 Pages) Maxim Integrated Products – +3V, 18-Bit, Low-Power, Multichannel, Oversampling Sigma-Delta ADC

+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
Table 8. Transfer-Function Register Mapping—Normal Mode (M1 = 0, M0 = 0)
SCAN
DIFF
A1
A0
CHANNEL
TRANSFER-
FUNCTION REGISTER
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
X
X
1
0
X
X
1
0
X
X
1
0
X
X
1
0
X
X
1
1
X
X
1
1
X
X
1
1
X
X
1
1
1
1
AIN1–AIN6
1
AIN2–AIN6
1
AIN3–AIN6
2
AIN4–AIN6
2
AIN1–AIN2
1
AIN3–AIN4
2
AIN5–AIN6
3
Do Not Use
AIN1–AIN6
1
AIN2–AIN6
1
AIN3–AIN6
2
AIN4–AIN6
2
AIN5–AIN6
3
AIN1–AIN2
1
AIN3–AIN4
2
AIN5–AIN6
3
Do Not Use Do Not Use
X = Don’t care
Table 9. Transfer-Function Register Mapping—Offset-Calibration Mode (M1 = 0, M0 = 1)
SCAN
DIFF
A1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
X
1
0
X
1
0
X
1
0
X
1
0
X
1
0
X
1
0
X
1
1
X
1
1
X
1
1
X
1
1
X
1
1
X
1
1
1
A0
CHANNEL
TRANSFER-
FUNCTION REGISTER
0
CALOFF+–CALOFF-
1
1
CALOFF+–CALOFF-
1
0
CALOFF+–CALOFF-
2
1
CALOFF+–CALOFF-
2
0
CALOFF+–CALOFF-
1
1
CALOFF+–CALOFF-
2
0
CALOFF+–CALOFF-
3
1
Do Not Use
X
AIN1–AIN6
1
X
AIN2–AIN6
1
X
AIN3–AIN6
2
X
AIN4–AIN6
2
X
AIN5–AIN6
3
X
CALOFF+–CALOFF-
3
X
CALGAIN+–CALGAIN-
3
X
AIN1–AIN2
1
X
AIN3–AIN4
2
X
AIN5–AIN6
3
X
CALOFF+–CALOFF-
3
X
CALGAIN+–CALGAIN-
3
1
Do Not Use Do Not Use
X = Don’t care
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