Datasheet

  
  
SLVS023J − JANUARY 1989 − REVISED MARCH 2005
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
+
412 Ω
†
±1%
†
Adjust for 12.17 mV at 25°C across 412 Ω
2.00 kΩ ±1%
I
O
≈ 60 µA
+
3.3 kΩ
R
LM334
V−
V+
200 kΩ ±1%
20 kΩ
953 Ω
±1%
Meter
Type K
LM385-2.5
−
−
500 Ω
cw
cw
Two Mercury
Cells
2.6 V
Figure 10. Thermocouple Cold-Junction Compensator
3.7 V ≤ V+ ≤ 30 V
R
V−
V+
2.74 kΩ
2.5 V
LM385-2.5
LM334
Figure 11. Operation Over a Wide Supply Range
LM385-2.5
221 kΩ
9 V
2.5 V
Figure 12. Reference From a 9-V Battery