8

®

XTR110

16

1

13

14

7

6

8

10

9

15

12

11

4

3

5

2

+10V

Reference

+15V

A

4

A

3

R

9

15k

Ω

R

10

1k

Ω

Offset

Adjust

R

3

20k

Ω

R

5

2M

Ω

A

2

R

4

2k

Ω

T

3

A

1

R

2

4.99

Ω

R

7

4.75k

Ω

R

6

402

Ω

R

Fine Trim

RH 50k

Ω

Course Trim

R

1

2

Ω

T

2

–15V

I

O

Span

Adjust

V

IN

V

10

5

0

200

–200

I

R

Low TC resistors to dissipate 0.32W continuous power.

For other current ranges, scale both resistors proportionately.

R

10-turn trimpots for greatest sensitivity.

R

Low TC resistors.

A

1/4 LM324 (powered by ±15V).

T

International Rectifier IR9513

T

International Rectifier IR513

T

International Rectifier IRFF9113

NOTE: (1) Or other adequate power rating MOS transistor.

T

1

TYPICAL APPLICATIONS

The XTR110 is ideal for a variety of applications requiring

high noise immunity current-mode signal transmission. The

precision +10V reference can be used to excite bridges and

transducers. Selectable ranges make it very useful as a

precision programmable current source. The compact design

and low price of the XTR110 allow versatility with a

minimum of external components and design engineering

expense.

Figures 8 through 10 show typical applications of the

XTR110.

FIGURE 8.

±200mA Current Pump.