LM135H National Semiconductor, LM135H Datasheet - Page 8

• Manufacturer Part Number: LM135H
• Description: IC, TEMP SENSOR, ± 0.5°C, TO-46-3
• Manufacturer: National Semiconductor

Specifications of LM135H

• Ic Output Type: Voltage
• Sensing Accuracy Range: ± 2.7°C
• Supply Current: 1mA
• Sensor Case Style: TO-46
• No. Of Pins: 3
• Operating Temperature Range: -55°C To +150°C
• Supply Voltage Min: 5V
• Rohs Compliant: No
• Leaded Process Compatible: No
• Operating Temperature Max: 150°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

www.national.com
Typical Applications
*To calibrate adjust R2 for 2.554V across LM336.
Adjust R1 for correct output.
*
Select R3 for proper thermocouple type
Adjustments: Compensates for both sensor and resistor tolerances
1. Short LM329B
2. Adjust R1 for Seebeck Coefficient times ambient temperature (in degrees K) across R3.
3. Short LM335 and adjust R2 for voltage across R3 corresponding to thermocouple type
THERMOCOUPLE COLD JUNCTION COMPENSATION
(Continued)
THERMO-
T
J
COUPLE
Compensation for Grounded Thermocouple
K
S
J
T
14.32 mV
11.79 mV
Fahrenheit Thermometer
(
45.8
377
308
293
±
R3
1%)
8
K
S
COEFFICIENT
SEEBECK
52.3 µV/˚C
42.8 µV/˚C
40.8 µV/˚C
6.4 µV/˚C
DS005698-24
1.768 mV
11.17 mV
DS005698-6