Datasheet
ADuM1400/ADuM1401/ADuM1402
Rev. B | Page 15 of 24
PIN CONFIGURATIONS AND PIN FUNCTION DESCRIPTIONS
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
NC = NO CONNECT
ADuM1400
TOP VIEW
(Not to Scale)
03786-0-005
V
DD1
*
GND
1
V
IA
V
IB
V
IC
V
ID
NC
*
GND
1
V
DD2
GND
2
*
V
OA
V
OB
V
OC
V
OD
V
E2
GND
2
*
Figure 5. ADuM1400 Pin Configuration
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
ADuM1401
TOP VIEW
(Not to Scale)
03786-0-006
V
DD1
*
GND
1
V
IA
V
IB
V
IC
V
OD
V
E1
*
GND
1
V
DD2
GND
2
*
V
OA
V
OB
V
OC
V
ID
V
E2
GND
2
*
Figure 6. ADuM1401 Pin Configuration
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
ADuM1402
TOP VIEW
(Not to Scale)
03786-0-007
V
DD1
*
GND
1
V
IA
V
IB
V
OC
V
OD
V
E1
*
GND
1
V
DD2
GND
2
*
V
OA
V
OB
V
IC
V
ID
V
E2
GND
2
*
Figure 7. ADuM1402 Pin Configuration
* Pins 2 and 8 are internally connected. Connecting both to GND
1
is recommended. Pins 9 and 15 are internally connected. Connecting both to GND
2
is recommended.
Output enable Pin 10 on the ADuM1400 may be left disconnected if outputs are to be always enabled. Output enable Pins 7 and 10 on the ADuM1401/ADuM1402
may be left disconnected if outputs are to be always enabled. In noisy environments, connecting Pin 7 (for ADuM1401 and ADuM1402) and Pin 10 (for all models) to
an external logic high or low is recommended.
Table 11. ADuM1400 Pin Function Descriptions
Pin
No.
Mnemonic Function
1 V
DD1
Supply Voltage for Isolator Side 1, 2.7 V to 5.5 V.
2 GND
1
Ground 1. Ground reference for isolator Side 1.
3 V
IA
Logic Input A.
4 V
IB
Logic Input B.
5 V
IC
Logic Input C.
6 V
ID
Logic Input D.
7 NC No Connect.
8 GND
1
Ground 1. Ground reference for isolator Side 1.
9 GND
2
Ground 2. Ground reference for isolator Side 2.
10 V
E2
Output Enable 2. Active high logic input. V
OA
, V
OB
, V
OC
, and V
OD
outputs are enabled when V
E2
is high or disconnected. V
OA
, V
OB
, V
OC
, and
V
OD
outputs are disabled when V
E2
is low. In noisy environments, connecting V
E2
to an external logic high or low is recommended.
11 V
OD
Logic Output 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.
16 V
DD2
Supply Voltage for Isolator Side 2, 2.7 V to 5.5 V.