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LM34AH Scheda tecnica(PDF) 1 Page - Texas Instruments |
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LM34AH Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 27 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM34 SNIS161D – MARCH 2000 – REVISED JANUARY 2016 LM34 Precision Fahrenheit Temperature Sensors 1 Features 3 Description The LM34 series devices are precision integrated- 1 • Calibrated Directly in Degrees Fahrenheit circuit temperature sensors, whose output voltage is • Linear 10.0 mV/°F Scale Factor linearly proportional to the Fahrenheit temperature. • 1.0°F Accuracy Assured (at 77°F) The LM34 device has an advantage over linear temperature sensors calibrated in degrees Kelvin, • Rated for Full −50° to 300°F Range because the user is not required to subtract a large • Suitable for Remote Applications constant voltage from its output to obtain convenient • Low Cost Due to Wafer-Level Trimming Fahrenheit scaling. The LM34 device does not require any external calibration or trimming to provide • Operates From 5 to 30 Volts typical accuracies of ±1/2°F at room temperature and • Less Than 90- μA Current Drain ±1-1 ⁄2°F over a full −50°F to 300°F temperature • Low Self-Heating, 0.18°F in Still Air range. Lower cost is assured by trimming and • Nonlinearity Only ±0.5°F Typical calibration at the wafer level. The low output impedance, linear output, and precise inherent • Low-Impedance Output, 0.4 Ω for 1-mA Load calibration of the LM34 device makes interfacing to readout or control circuitry especially easy. It can be 2 Applications used with single power supplies or with plus and • Power Supplies minus supplies. Because the LM34 device draws only 75 µA from its supply, the device has very low self- • Battery Management heating, less than 0.2°F in still air. • HVAC The LM34 device is rated to operate over a −50°F to • Appliances 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-92 transistor package. The LM34D device is available in an 8-lead, surface-mount, small- outline package. The LM34 device is a complement to the LM35 device (Centigrade) temperature sensor. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOIC (8) 4.90 mm × 3.91 mm LM34 TO-92 (3) 4.30 mm × 4.30 mm TO-46 (3) 4.699 mm × 4.699 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Basic Fahrenheit Temperature Sensor (5°F to Full-Range Fahrenheit Temperature Sensor 300°F) 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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