MAX11644 Datasheet, PDF (14/21 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 1-/2-Channel, 2-Wire Serial, 12-Bit ADCs

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
1-/2-Channel, 2-Wire Serial, 12-Bit ADCs
Table 2. Configuration Byte Format
BIT 7
(MSB)
REG
BIT 6
SCAN1
BIT 5
SCAN0
BIT 4
X
BIT 3
X
BIT 2
X
BIT 1
CS0
BIT 0
(LSB)
SGL/DIF
BIT
7
6
5
4
3
2
1
0
X = Don’t care.
NAME
REG
SCAN1
SCAN0
X
X
X
CS0
SGL/DIF
DESCRIPTION
Register bit. 1 = setup byte (see Table 1), 0 = configuration byte.
Scan select bits. Two bits select the scanning configuration (Table 5). Default to 00 at power-up.
Channel select bit. CS0 selects which analog input channels are to be used for conversion
(Tables 3 and 4). Default to 0000 at power-up.
1 = single-ended, 0 = differential (Tables 3 and 4). Defaults to 1 at power-up. See the Single-
Ended/Differential Input section.
Table 3. Channel Selection in Single-Ended Mode (SGL/DIF = 1)
CS0
AIN0
AIN1
GND
0
+
-
1
+
-
Table 4. Channel Selection in Differential Mode (SGL/DIF = 0)
CS0
AIN0
AIN1
0
+
-
1
-
+
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