Datasheet

XTR106
15
SBOS092A
www.ti.com
FIGURE 7. Thermocouple Low Offset, Low Drift Loop Measurement with Diode Cold-Junction Compensation.
FIGURE 8. ±12V-Powered Transmitter/Receiver Loop.
11
1
14
5
4
3
2
R
G
1kΩ
XTR106
7
13
I
O
= 4mA + V
IN
• ( )
V
REG
(pin 1)
40
R
G
V
REF
2.5
6
R
G
R
G
V
IN
–
V
IN
+
R
LIN
V
REG
V+
I
RET
Lin
Polarity
I
O
E
B
V
PS
4-20 mA
I
O
C
OUT
0.01µF
7.5V to 36V
–
+
9
8
10
12
R
L
V
O
Q
1
V
REF
5
Type K
100Ω
50Ω
5.2kΩ
4.8kΩ
1MΩ
(1)
20kΩ
6kΩ
2kΩ
0.01µF
1MΩ
0.01µF
OPA277
See ISO124 data sheet
if isolation is needed.
1N4148
Isothermal
Block
NOTE: (1) For burn-out indication.
4
3
2
R
G
XTR106
7
6
R
G
R
G
V+
10
5
B
E
9
8
V
IN
Lin
Polarity
–
V
IN
+
I
RET
I
O
12
NOTE: Lin Polarity shown connected to correct positive bridge
nonlinearity. See Figure 3b to correct negative bridge nonlinearity.
14
11
1
13
R
LIN
V
REF
2.5
V
REF
5
2.5V
R
B
V
REG
Bridge
Sensor
– +
5
4
2
3
15
13
14
11
10
12
RCV420
16
1µF
1µF
0.01µF
1N4148
+12V
–12V
V
O
= 0V to 5V
I
O
= 4-20mA
See ISO124 data sheet
if isolation is needed.