Features
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Directly calibrated in °Kelvin |
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1°C initial accuracy available |
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Operates from 400 µA to 5 mA |
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Less than 1Ohm dynamic impedance |
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Easily calibrated |
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Wide operating temperature range |
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200°C overrange |
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Low cost |
General Description
The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. More...
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Typical Application
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Parametric Table expand
Parametric Table collapse
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Typical Performance
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Package Availability, Models, Samples & Pricing
| Obsolete Part |
Alternate Part or Supplier |
Source |
Last Time Buy Date |
LM135G MW8
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MIL.PKG.PROD
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NATIONAL SEMICONDUCTOR
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12/07/99
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General Description
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 1Ohm 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 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 LM135/LM235/LM335 are available packaged in hermetic TO-46 transistor packages while the LM335 is also available in plastic TO-92 packages.
Application Notes
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