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| OPA378_1 Datasheet, PDF (14/24 Pages) Texas Instruments – Low-Noise, 900kHz, RRIO, Precision OPERATIONAL AMPLIFIER Zerø-Drift Series | |||
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OPA378
OPA2378
SBOS417C â JANUARY 2008 â REVISED JUNE 2009 ..................................................................................................................................................... www.ti.com
+5V
+
0.1mF
REF3333
D1
3.3V
R1
6.04kW
R5
31.6kW
R8
150kW
+5V
10mF
--
++
K-Type
Thermocouple
40.7mV/°C
R2
2.94kW
R7
549W
0.1mF
R6
OPA378
VO
200W
R4
R3
Zero Adj.
6.04kW 60.4W
Figure 33. Temperature Measurement
1MW
3V
1MW
60kW
100kW
NTC
Thermistor OPA378
Figure 34. Thermistor Measurement
V1
-In
OPA378
INA152
2
5
R2
R1
R2
6
VO
3
1
OPA378
V2
+In
VO = (1 + 2R2/R1) (V2 - V1)
Figure 35. Precision Instrumentation Amplifier
14
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Product Folder Link(s): OPA378 OPA2378
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