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Figure 1-13, Isolated/differential digital input circuit, Figure 1-14 – ADLINK MXE-5400 User Manual

Page 32: Isolated digital input sample application circuit, Preliminary

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PRELIMINARY

20

Introduction

Figure 1-13: Isolated/Differential Digital Input Circuit

Figure 1-14: Isolated Digital Input Sample Application Circuit

IDI_6 7L

D21

T VS

D21

T VS

1

1

2

2

1

1

2

2

4

4

3

3

R6 71

8 .2K_ +- 5%

R6 71

8 .2K_ +- 5%

IDI_nH

IDI_nL

DI

GND

8.2 K_+ -5 %

8.2 K_+ -5 %

D20

TVS

D20

TVS

1

1

2

2

1

1

2

2

4

4

3

3

R67 0

8.2 K_+ -5 %

R67 0

8.2 K_+ -5 %

D20

TVS

D20

TVS

1

1

2

2

IS1

IS1

1

1

2

2

4

4

3

3

DI

GND

DI

GND

ISO_COM

ISO_COM

Power

Power