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) | PDF | HTML | 10 Feb 2015 |
| 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-92 (LP) | 3 | View options |
| TO-CAN (NDV) | 3 | View options |
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