AS1538/AS1540
Data Sheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
1
2
3
4
5
6
7
8
16 +VDD
15 SDA
14 SCL
13 A1
16 15 14 13
CH1
CH2
CH3
N/C
SCL
A1
1
2
3
4
12
11
10
9
AS1538
AS1540
12 A0
A0
11 COM
10 REFIN/OUT
N/C
5
6
7
8
9
GND
Pin Descriptions
Table 1. Pin Descriptions
AS1538
AS1540
1:3,16
Pin Name
CH0:CH3
CH0:CH7
GND
Description
Analog Input Channels 0 to 3
Analog Input Channels 0 to 7
Analog Ground
-
1:8
9
-
6
Internal Reference/External Reference Input
Analog Input Channel Common
Slave Address Bit 0
10
11
12
13
14
15
16
-
7
REFIN/OUT
COM
8
10
A0
Slave Address Bit 1
11
12
A1
Serial Clock
SCL
Serial Data
13
SDA
Power Supply Input. 2.7 to 5.25V.
Not Connected
15
+VDD
4, 5, 9, 14
NC
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