ADuM7440/ADuM7441/ADuM7442 Data Sheet
Rev. D | Page 10 of 20
V
DD1A
1
GND
1
*
2
V
IA
3
V
IB
4
V
DD2A
16
GND
2
*
15
V
OA
14
V
OB
13
V
IC
5
V
OC
12
V
OD
6
V
ID
11
V
DD1B
7
V
DD2B
10
GND
1
*
8
GND
2
*
9
ADuM7441
TOP VIEW
(Not to Scale)
*PIN 2 AND PIN 8 ARE INTERNALLY CONNECTED. CONNECTING BOTH
TO GND
1
IS RECOMMENDED. PIN 9 AND PIN 15 ARE INTERNALLY
CONNECTED. CONNECTING BOTH TO GND
2
IS RECOMMENDED.
08340-005
Figure 6. ADuM7441 Pin Configuration
Table 21. ADuM7441 Pin Function Descriptions
Pin No. Mnemonic Description
1 V
DD1A
Supply Voltage A for Isolator Side 1 (3.0 V to 5.5 V). Pin 1 must be connected externally to Pin 7. Connect a ceramic
bypass capacitor of value 0.01 μF to 0.1 μF between V
DD1A
(Pin 1) and GND
1
(Pin 2).
2 GND
1
Ground 1. Ground reference for Isolator Side 1. Pin 2 and Pin 8 are internally connected, and connecting both to GND
1
is
recommended.
3 V
IA
Logic Input A.
4 V
IB
Logic Input B.
5 V
IC
Logic Input C.
6 V
OD
Logic Output D.
7 V
DD1B
Supply Voltage B for Isolator Side 1 (3.0 V to 5.5 V). Pin 7 must be connected externally to Pin 1. Connect a ceramic
bypass capacitor of value 0.01 μF to 0.1 μF between V
DD1B
(Pin 7) and GND
1
(Pin 8).
8 GND
1
Ground 1. Ground reference for Isolator Side 1. Pin 2 and Pin 8 are internally connected, and connecting both to GND
1
is
recommended.
9 GND
2
Ground 2. Ground reference for Isolator Side 2. Pin 9 and Pin 15 are internally connected, and connecting both to GND
2
is
recommended.
10 V
DD2B
Supply Voltage B for Isolator Side 2 (3.0 V to 5.5 V). Pin 10 must be connected externally to Pin 16. Connect a ceramic
bypass capacitor of value 0.01 μF to 0.1 μF between V
DD2B
(Pin 10) and GND
2
(Pin 9).
11 V
ID
Logic Input D.
12 V
OC
Logic Output C.
13 V
OB
Logic Output B.
14 V
OA
Logic Output A.
15 GND
2
Ground 2. Ground reference for Isolator Side 2. Pin 9 and Pin 15 are internally connected, and connecting both to GND
2
is
recommended.
16 V
DD2A
Supply Voltage A for Isolator Side 2 (3.0 V to 5.5 V). Pin 16 must be connected externally to Pin 10. Connect a
ceramic bypass capacitor of value 0.01 μF to 0.1 μF between V
DD2A
(Pin 16) and GND
2
(Pin 15).
