STLC30R81

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PIN CONNECTION (Top view)

PIN DESCRIPTION

N°

Pin

Type

Function

1

N.C.

No Connection

2

CSI

In

Chip-Select for input control bits; active low.

3

D0

In

Control Interface input bit 0. *

4

DI

In

Control Interface input bit 1. *

5

D2

In

Control Interface input bit 2. *

6

D3

In

Control Interface input bit 3. *

7

RES

In

Reset pin active low

8

N.C.

No Connection

9

VDD

In

Control Interface Power Supply

10

VCC

In

Positive Power Supply.

11

CRT

In

GNDK detection capacitor

12

CREV

In

Reverse polarity transition time programming capacitor

13

N.C.

No Connection

14

VBAT1

In

Negative Battery Supply 1 (-38V Typ)

15

N.C.

No Connection

16

VBAT2

In

Negative Battery Supply 2 (-74V Typ)

17

TX

Out

4 wires output stage (transmitting port)

18

ZB

In

Canceling input of balance network for 2 to 4 wires conversion.

19

RS

In

Protection resistors image. It is connected between this node and ZAC

20

ZAC

In

AC impedance synthesis

21

ZAC1

In

RX buffer output / AC impedance is connected between this node and ZAC

22

Rxin+

In

4 wires input stage (receiving port). A 100K external resistor must be connected to

AGND to bias the input stage

23

Rxin-

In

4 wires input stage (receiving port). A 100K external resistor must be connected to

AGND to bias the input stage. If not used must be tied to ground.

N.C.

RXin-

D01TL512

1

2

3

5

6

4

7

8

9

10

17

11

18 19 20 21 22

44 43 42 41

39

40

38 37 36 35 34

28

27

26

24

23

25

33

32

31

29

30

12 13 14 15 16

CS

D0

D1

D2

D3

RES

N.C.

CRT

RG+

RG-

CAC

RD

ILTF

AGND

N.C.

RTH

RLIM

IREF