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Data Sheet
ADuM5200/ADuM5201/ADuM5202
V DD1 1
GND 1 2
16
15
V ISO
GND ISO
V IA 3
ADuM5201
14
V OA
V OB 4
TOP VIEW
13 V IB
RC IN 5
(Not to Scale) 12 NC
RC SEL 6
V E1 7
GND 1 8
11
10
9
V SEL
V E2
GND ISO
NC = NO CONNECT
Figure 7. ADuM5201 Pin Configuration
Table 22. ADuM5201 Pin Function Descriptions
Pin No. Mnemonic Description
1
2, 8
3
4
5
6
7
9, 15
10
11
12
13
14
16
V DD1
GND 1
V IA
V OB
RC IN
RC SEL
V E1
GND ISO
V E2
V SEL
NC
V IB
V OA
V ISO
Primary Supply Voltage, 3.0 V to 5.5 V.
Ground 1. Ground reference for isolator primary side. Pin 2 and Pin 8 are internally connected to each other, and it is
recommended that both pins be connected to a common ground.
Logic Input A.
Logic Output B.
Regulation Control Input. This pin must be connected to the RC OUT pin of a master iso Power device or tied low. Note
that this pin must not be tied high if RC SEL is low; this combination causes excessive voltage on the secondary side,
damaging the ADuM5201 and possibly the devices that it powers.
Control Input. Determines self-regulation mode (RC SEL high) or slave mode (RC SEL low), allowing external regulation.
This pin is weakly pulled to the high state. In noisy environments, tie this pin either high or low.
Data Enable Input. When this pin is high or not connected, the primary output is active; when this pin is low, the
output is in a high-Z state.
Ground Reference for Isolator Side 2. Pin 9 and Pin 15 are internally connected to each other, and it is recommended
that both pins be connected to a common ground.
Data Enable Input. When this pin is high or not connected, the secondary output is active; when this pin is low, the
output is in a high-Z state.
Output Voltage Selection. When V SEL = V ISO , the V ISO setpoint is 5.0 V. When V SEL = GND ISO , the V ISO setpoint is 3.3 V.
In slave regulation mode, this pin has no function.
No Internal Connection.
Logic Input B.
Logic Output A.
Secondary Supply Voltage. Output for secondary side isolated data channels and external loads.
Rev. B | Page 13 of 28
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