Precision Temperature Sensor - LM335

LM335 (ACTIVE)

Precision Temperature Sensor

Recommended alternative parts

  • LMT84  -  Higher max accuracy, lower minimum supply voltage, and negative sensor gain or coefficient

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 1Ω 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 transistor packages while the LM335 is also available in plastic TO-92 packages.

Features

  • Directly Calibrated in °Kelvin
  • 1°C Initial Accuracy Available
  • Operates from 400 μA to 5 mA
  • Less than 1Ω Dynamic Impedance
  • Easily Calibrated
  • Wide Operating Temperature Range
  • 200°C Overrange
  • Low Cost

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Parametrics Compare all products in Analog Output

 
Local Sensor Accuracy (Max) (+/- C)
Sensor Gain (mV/Deg C)
Output Impedance (Ohm)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Shutdown
Interface
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM335 LM94022 LM94022-Q1
6     1.5     1.5    
10     -5.5 to 13.6     -5.5 to 13.6    
0.6     5.2     5.2    
5     1.5     1.5    
  5.5     5.5    
No     No     No    
Analog     Analog     Analog    
  Selectable gain setting     Selectable gain setting    
Military     Catalog     Automotive    
-40 to 100     -50 to 150     -50 to 150    
3TO
3TO-92
8SOIC    
5SC70     5SC70    
  0.37 | 1ku     0.53 | 1ku    
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