LTC2876/LTC2877

25

28767fa

For more information www.linear.com/LTC2876

applicaTions inForMaTion

Figure 19. Complete Configuration for PROFIBUS Operation Using the (a) LTC2876, or (b) LTC2877 and

(c) the Cable with Termination Resistors

SENSOR

1µF

4.5V to 5.5V

0.1µF

1µF

28767 F18

DI

RE

RO

DE

PA

PB

LTC2876

µC

5

6

3

8

9-PIN D-SUB

CONNECTOR

(FEMALE)

1

GND

(a)

(b)

GND

PA

PB

SENSOR

4.5V to 5.5V

1.65V to 5.5V

DI

RE

RO

DE

PA

PB

LTC2877

µC

5

6

3

8

9-PIN D-SUB

CONNECTOR

(FEMALE)

1

GND

GND

PA

PB

SHIELD

PROFIBUS CABLE

TERMINATION RESISTOR STRINGS

SWITCHED IN TO SIGNAL LINES

IF LOCATED AT BUS END

B

A

390

390

220

9-PIN D-SUB

CONNECTOR

(MALE)

9-PIN D-SUB

CONNECTOR

(MALE)

5

6

3

8

1

5

6

3

8

1

390

390

220

(c)