LM34 - Texas Instruments

LM34 Precision Fahrenheit Temperature Sensors

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 Fahr.

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 linear.