OP07
R1
SENDING
JUNCTION
R3
APPLICATIONS INFORMATION
The OP07 provides stable operation with load capacitance of up
to 500 pF and
±10
V swings; larger capacitances should be
decoupled with a 50 Ω decoupling resistor.
6
E
O
V+
2
7
–
REFERENCE
JUNCTION
OP07
R2
R4
3
+
4
V–
R1 R2
=
R3 R4
NOTES
1. PINOUT SHOWN FOR P PACKAGE
Figure 32. High Stability Thermocouple Amplifier
R3
10kΩ
R4
10kΩ
R5
10kΩ
V+
V+
E
IN
±10V
R1
10kΩ
2
7
FD333
D1
6
3
FD333
D2
R2
10kΩ
V
A
00316-033
2
7
–
–
OP07
A1
3
OP07
A2
+
4
V–
6
E
O
0V TO +10V
+
4
V–
NOTES
1. PINOUT SHOWN FOR P PACKAGE
Figure 33. Precision Absolute-Value Circuit
00316-032
Stray thermoelectric voltages generated by dissimilar metals at
the contacts to the input terminals can degrade drift
performance. Therefore, best operation is obtained when both
input contacts are maintained at the same temperature,
preferably close to the package temperature.
Rev. D | Page 12 of 16
AD [ ANALOG DEVICES ]
