±1°F 5V-30V, Analog output temperature sensor with Fahrenheit scale calibration

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 0.556 Operating temperature range (C) -40 to 110, -45.6 to 148.9, 0 to 100 Supply voltage (Min) (V) 5 Supply voltage (Max) (V) 30 Supply current (Max) (uA) 160 Interface type Analog output Sensor gain (mV/Deg C) 10 Rating Catalog open-in-new Find other Analog temperature sensors

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 TO-92 (LP) 3 19 mm² 5.2 x 3.68 TO-CAN (NDV) 3 35 mm² 6.41 x 5.44 open-in-new Find other Analog temperature sensors

Features

  • 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
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Description

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 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-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.

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TMP235 ACTIVE ±1.2°C 2.3V to 5.5V analog output temperature sensor with 10 mV/C gain This product has smaller package sizes, lower IQ (12uA), and supports a lower voltage supply (2.3V).

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet LM34 Precision Fahrenheit Temperature Sensors datasheet (Rev. D) Jan. 05, 2016
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018
Application notes AN-460 LM34/LM35 Precision Monolithic Temperature Sensors (Rev. C) May 01, 2013

Design & development

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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
TO (NDV) 3 View options
TO-92 (LP) 3 View options

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