Datasheet

XTR110
9
SBOS141C
www.ti.com
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.
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
15kΩ
R
10
1kΩ
Offset
Adjust
R
3
20kΩ
R
5
2MΩ
A
2
R
4
2kΩ
T
3
A
1
R
2
4.99Ω
R
7
4.75kΩ
R
6
402Ω
R
8
200Ω
Fine Trim
RH 50kΩ
Coarse Trim
R
1
2Ω
T
2
–15V
I
O
Span
Adjust
V
IN
V
IN
(V)
105
0
200
–200
I
O
(mA)
R
1
, R
2
: Low TC resistors to dissipate 0.32W continuous power.
For other current ranges, scale both resistors proportionately.
R
8
, R
10
, R
11
: 10-turn trimpots for greatest sensitivity.
R
6
, R
7
: Low TC resistors.
A
1
- A
4
: 1/4 LM324 (powered by ±15V).
T
1
: International Rectifier IR9513
(1)
.
T
2
: International Rectifier IR513
(1)
.
T
3
: International Rectifier IRFF9113
(1)
.
NOTE: (1) Or other adequate power rating MOS transistor.
T
1