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LM34

Texas Instruments
Part Number LM34
Manufacturer Texas Instruments
Description Precision Fahrenheit Temperature Sensors
Published Apr 8, 2020
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM34 SNIS161D – MARCH 2000 – R...
Datasheet PDF File LM34 PDF File

LM34
LM34

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM34 SNIS161D – MARCH 2000 – REVISED JANUARY 2016 LM34 Precision Fahrenheit Temperature Sensors 1 Features •1 Calibrated Directly in Degrees Fahrenheit • Linear 10.
0 mV/°F Scale Factor • 1.
0°F Accuracy Assured (at 77°F) • Rated for Full −50° to 300°F Range • Suitable for Remote Applications • Low Cost Due to Wafer-Level Trimming • Operates From 5 to 30 Volts • Less Than 90-μA Current Drain • Low Self-Heating, 0.
18°F in Still Air • Nonlinearity Only ±0.
5°F Typical • Low-Impedance Output, 0.
4 Ω for 1-mA Load 2 Applications • Power Supplies • Battery Management • HVAC • Appliances 3 Description The LM34 series devices are precision integratedcircuit temperature sensors, whose output voltage is linearly proportional to the Fahrenheit temperature.
The LM34 device has an advantage over linear temperature sensors calibrated in degrees Kelvin, because the user is not required to subtract a large constant voltage from its output to obtain convenient Fahrenheit scaling.
The LM34 device does not require any external calibration or trimming to provide typical accuracies of ±1/2°F at room temperature and ±1-1⁄2°F over a full −50°F to 300°F temperature range.
Lower cost is assured by trimming and calibration at the wafer level.
The low output impedance, linear output, and precise inherent calibration of the LM34 device makes interfacing to readout or control circuitry especially easy.
It can be used with single power supplies or with plus and minus supplies.
Because the LM34 device draws only 75 µA from its supply, the device has very low selfheating, less than 0.
2°F in still air.
The LM34 device is rated to operate over a −50°F to 300°F temperature range, while the LM34C is rated for a −40°F to 230°F range (0°F with improved accuracy).
The LM34 devices are series is available packaged in hermetic TO-46 transistor packages; while the LM34C, LM34CA, and LM34D are available in the plastic TO...


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