INA133
1/2 INA2133
2
5
6
1
V2
R
R
2
12
13
14
A
V1
V01
3
V1
3
IO = (V1 – V2) (1/25k + 1/R)
Load
IO
V2
1/2 INA2133
FIGURE 15. Precision Voltage-to-Current Converter with
Differential Inputs.
6
10
9
INA133
B
V02
2
5
6
V2
8
5
R
V01 – V02 = 2 (V2 – V1)
3
OPA131
V3
1
FIGURE 18. Differential Output Difference Amplifier.
IO
IO = (V3 – V2)/R
Load
INA133
2
5
6
1
FIGURE 16. Differential Input Voltage-to-Current Con-
V2
verter for Low IOUT
.
INA133
R
(R ≥ 200Ω)
2
5
6
1
V2
3
V3
Gate can be
+VCC –5V
R
R
R < 200Ω
(V3 – V2)
R
Load
IO
IO
=
Gate can be
+VS –5V
3
V3
I
O = (V3 – V2) (1/25k + 1/R)
FIGURE 19. Isolating Current Source with Buffering Am-
plifier for Greater Accuracy.
Load
IO
FIGURE 17. Isolating Current Source.
®
13
INA133, INA2133
BB [ BURR-BROWN CORPORATION ]
