LM335AZ National Semiconductor, LM335AZ Datasheet - Page 9

• Manufacturer Part Number: LM335AZ
• Description: IC, TEMPERATURE SENSOR, 0.5°C, TO-92-3
• Manufacturer: National Semiconductor

Specifications of LM335AZ

• Ic Output Type: Voltage
• Sensing Accuracy Range: ± 3°C
• Supply Current: 1mA
• Sensor Case Style: TO-92
• No. Of Pins: 3
• Termination Type: Through Hole
• Output Voltage/deg C: 10mV/°C
• Filter Terminals: Through Hole
• Rohs Compliant: No
• Accuracy %: 1°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

*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.
THERMO-
COUPLE
T
K
S
T
J
J
14.32 mV
11.79 mV
(±1%)
45.8Ω
377Ω
308Ω
293Ω
R3
THERMOCOUPLE COLD JUNCTION COMPENSATION
Compensation for Grounded Thermocouple
COEFFICIENT
SEEBECK
52.3 μV/°C
42.8 μV/°C
40.8 μV/°C
6.4 μV/°C
Fahrenheit Thermometer
K
S
9
11.17 mV
1.768 mV
569824
569806
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