Datasheet

13
®
INA133, INA2133
FIGURE 15. Precision Voltage-to-Current Converter with
Differential Inputs.
5
6
3
INA133
2
1
V
1
V
2
Load
I
O
= (V
1
– V
2
) (1/25k + 1/R)
I
O
R
R
5
6
3
INA133
2
1
V
3
V
2
Load
I
O
= (V
3
– V
2
)/R
I
O
R
OPA131
FIGURE 16. Differential Input Voltage-to-Current Con-
verter for Low I
OUT
.
5
6
3
INA133
2
1
V
3
V
2
Load I
O
R
R
Gate can be
+V
S
–5V
I
O
= (V
3
– V
2
) (1/25k + 1/R)
R < 200Ω
12
13
3
1/2 INA2133
2
V
01
14
10
9
5
1/2 INA2133
A
B
6
V
01
– V
02
= 2 (V
2
– V
1
)
V
02
8
V
2
V
1
5
6
3
INA133
2
1
V
3
V
2
Load I
O
R
Gate can be
+V
CC
–5V
I
O
=
(V
3
– V
2
)
R
(R ≥ 200Ω)
FIGURE 17. Isolating Current Source.
FIGURE 18. Differential Output Difference Amplifier.
FIGURE 19. Isolating Current Source with Buffering Am-
plifier for Greater Accuracy.