ADLINK MXE-5400 - Manual (Page 33)

PRELIMINARY
Introduction 21
MXE-5400
Isolated Digital Output Circuits
Each isolation digital output channel adopts a MOSFET transistor,
capable of driving peak current up to 250mA (sustained current up
to 100 mA) with voltage ranges from 5V to 35V.
The VDD pin is connected in serial with a fly-wheel diode to pro-
tect the driver during inductance loading, such as relay, motor, or
solenoid. The VDD must connect to external power to form a
fly-wheel current loop.
Figure 1-15: Isolated Digital Output Circuits
Figure 1-16: Isolated Digital Output Sample Application Circuit
+ VD D
EOG ND
D29
BAV9 9
D29
BAV9 9
R6 82 6 80 R3 R6 82 6 80 R3
C6 06 C15 N50 VKX7 C6 06 C15 N50 VKX7
MO SFET S i99 45 BDY -T1- GE3 N-CH MO SFET S i99 45 BDY -T1- GE3 N-CH
4
4
3
3
6
6
5
5
DO_n IDO_n
EOG ND
D29
BAV9 9
D29
BAV9 9
R6 82 6 80 R3 R6 82 6 80 R3
C6 06 C15 N50 VKX7 C6 06 C15 N50 VKX7
Q2 6B
MO SFET S i99 45 BDY -T1- GE3 N-CH
Q2 6B
MO SFET S i99 45 BDY -T1- GE3 N-CH
4
4
3
3
6
6
5
5
+
-
DC
(5 to 35V)
Load