The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM135 has a breakdown voltage directly proportional to absolute temperature at 10 mV/°K. With less than 1-Ω dynamic impedance, the device operates over a current range of 400 µA to 5 mA with virtually no change in performance. When calibrated at 25°C, the LM135 has typically less than 1°C error over a 100°C temperature range. Unlike other sensors, the LM135 has a linear output.
Applications for the LM135 include almost any type of temperature sensing over a –55°C to 150°C temperature range. The low impedance and linear output make interfacing to readout or control circuitry are especially easy.
The LM135 operates over a –55°C to 150°C temperature range while the LM235 operates over a –40°C to 125°C temperature range. The LM335 operates from –40°C to 100°C. The LMx35 devices are available packaged in hermetic TO transistor packages while the LM335 is also available in plastic
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LMx35, LMx35A Precision Temperature Sensors datasheet (Rev. E) | 10 Feb 2015 |
| Technical article | How to choose the right thermistor for your temperature sensing application | 13 Feb 2020 | |
| Technical article | How to enable thermal safety for automotive infotainment and cluster systems | 15 Oct 2019 | |
| Technical article | Driving industrial innovation with small-size sensors | 12 Sep 2019 | |
| Technical article | How to select a temperature sensor probe | 18 Feb 2016 | |
| Application note | IC Temp Sensor Provides Thermocouple Cold-Junction Compensation (Rev. B) | 23 Apr 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
| TO (NDV) | 3 | View options |
| TO-92 (LP) | 3 | View options |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.