3 Pack LM34 Precision Fahrenheit Temperature Sensor Linear IC

3 Pack LM34 Precision Fahrenheit Temperature Sensor Linear IC3 Pack LM34 Precision Fahrenheit Temperature Sensor IC Calibrated Directly in Degrees Fahrenheit Linear 10. 0 mV F Scale Factor 1. 0F Accuracy Assured (at 77F) Rated for Full 50 to 300F Range Suitable for Remote Applications Low Cost Due to Wafer Level Trimming Operates From 5 to 30 Volts Less Than 90 A Current Drain Low Self Heating, 0. 18F in Still Air Nonlinearity Only 0. 5F Typical Low Impedance Output, 0. 4 for 1 mA Load The LM34 series devices

• 3 Pack LM34 Precision Fahrenheit Temperature Sensor IC
• 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

The LM34 series devices are precision integrated-circuit 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 self-heating, less than 0.2°F in still air. The temperature sensing element is comprised of a simple base emitter junction that is forward biased by a
current source. The temperature sensing element is buffered by an amplifier and provided to the OUT pin. The amplifier has a simple class-A output stage thus providing a low impedance output that can source 16 μA and sink 1 μA. The temperature sensing element is comprised of a delta-VBE architecture. The temperature sensing element is then buffered by an amplifier and provided to the VOUT pin. The amplifier has a simple class A output stage with typical 0.5-Ω output impedance as shown in the Functional Block Diagram. Therefore, the LM34 device can only source current and the sinking capability of the device is limited to 1 μA.