MAX11645 Maxim Integrated Products, MAX11645 Datasheet - Page 14

• Manufacturer Part Number: MAX11645
• Description: 2-Wire Serial 12-Bit ADCs
• Manufacturer: 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
Table 2. Configuration Byte Format
X = Don’t care.
Table 3. Channel Selection in Single-Ended Mode (SGL/DIF = 1)
Table 4. Channel Selection in Differential Mode (SGL/DIF = 0)
14
(MSB)
______________________________________________________________________________________
BIT 7
REG
BIT
7
6
5
4
3
2
1
0
CS0
0
1
CS0
SGL/DIF
0
1
SCAN1
SCAN0
SCAN1
NAME
BIT 6
REG
CS0
X
X
X
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.
SCAN0
BIT 5
AIN0
+
BIT 4
X
AIN0
+
-
BIT 3
X
DESCRIPTION
AIN1
+
BIT 2
X
BIT 1
CS0
AIN1
+
-
w
GND
-
-
w
SGL/DIF
(LSB)
BIT 0
w
.
D
a