Datasheet

REF102
R
2
R
1
Pt100
Cu
Cu
V+
K
6
10.0V
4
2
INA129
V
O
Ref
R
R3
G
100Ω = Pt100 at 0°C
ISA
TYPE
MATERIAL
SEEBECK
COEFFICIENT
( V/°C)m
R , R
1 2
E
J
K
T
+Chromel
-Constantan
+Iron
-Constantan
+Chromel
-Alumel
+Copper
-Constantan
58.5
50.2
39.4
38
66.5k
76.8k
97.6k
102k
W
W
W
W
INA129
R
G
I
B
R
V
1
IN
+
A
1
I
O
Load
Ref
I
O
V
IN
R
1
· G
A I
1 B
ERROR
OPA177 ± 1.5 nA
OPA131 ± 50 pA
OPA602 ± 1 pA
OPA128 ± 75 fA
-
=
INA129-EP
SBOS508 –DECEMBER 2009 www.ti.com
Figure 28. Thermocouple Amplifier With RTD Cold-Junction Compensation
Figure 29. Differential Voltage to Current Converter
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Product Folder Link(s): INA129-EP