Datasheet

V
1
-In
V
2
+In
R
1
R
2
2
3
5
6
1
R
2
OPA333
OPA333
INA152
V
O
V = (1 + 2R / R
O 2 1 2 1
) (V V )-
OPA333
3 V
1 MW 60 kW
100 kW
1 MW
NTC
Thermistor
OPA333
Output
R
SHUNT
Load
V+
V+
R
G
R
L
R
(2)
1
10 kW
R
BIAS
+5V
zener
(1)
Two zener
biasing methods
are shown.
(3)
MOSFET rated to
stand-off supply voltage
such as BSS84 for
up to 50 V.
OPA333
OPA2333
www.ti.com SBOS351D –MARCH 2006–REVISED NOVEMBER 2013
Additional application ideas are shown in Figure 23 through Figure 26.
(1) Zener rated for op amp supply capability (that is, 5.1 V for OPA333).
(2) Current-limiting resistor.
(3) Choose zener biasing resistor or dual NMOSFETs (FDG6301N, NTJD4001N, or Si1034)
Figure 23. High-Side Current Monitor
Figure 24. Thermistor Measurement
Figure 25. Precision Instrumentation Amplifier
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