±1.5°C Analog Output Temperature Sensor  - LM20


±1.5°C Analog Output Temperature Sensor



The LM20 is a precision analog output CMOS integrated-circuit temperature sensor that operates over −55°C to 130°C. The power supply operating range is 2.4 V to 5.5 V. The transfer function of LM20 is predominately linear, yet has a slight predictable parabolic curvature. The accuracy of the LM20 when specified to a parabolic transfer function is ±1.5°C at an ambient temperature of 30°C. The temperature error increases linearly and reaches a maximum of ±2.5°C at the temperature range extremes. The temperature range is affected by the power supply voltage. At a power supply voltage of 2.7 V to 5.5 V, the temperature range extremes are 130°C and −55°C. Decreasing the power supply voltage to 2.4 V changes the negative extreme to −30°C, while the positive extreme remains at 130°C.

The LM20 quiescent current is less than 10 μA. Therefore, self-heating is less than 0.02°C in still air. Shutdown capability for the LM20 is intrinsic because its inherent low power consumption allows it to be powered directly from the output of many logic gates or does not necessitate shutdown.


  • Rated for −55°C to 130°C Range
  • Available in SC70 and DSBGA Package
  • Predictable Curvature Error
  • Suitable for Remote Applications
  • Accuracy at 30°C ±1.5 to ±4°C (Maximum)
  • Accuracy at 130°C and −55°C ±2.5 to ±5°C (Maximum)
  • Power Supply Voltage Range 2.4 V to 5.5 V
  • Current Drain 10 μA (Maximum)
  • Nonlinearity ±0.4% (Typical)
  • Output Impedance 160 Ω (Maximum)
  • Load Regulation
       0 μA < IL< 16 μA −2.5 mV (Maximum)

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Parametrics Compare all products in Local Analog Temperature Sensors

Local Sensor Accuracy (Max) (+/- C)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Max) (uA)
Sensor Gain (mV/Deg C)
Special Features
Output Impedance (Ohm)
LM20 LM60 LM94021 LM94022 LM94023 LMT84
1.5    2    1.5    1.5    1.5    2.7   
-40 to 125
-40 to 85
-55 to 130   
-25 to 125
-40 to 125   
-40 to 85
-50 to 150   
-50 to 150    -50 to 150    -50 to 150   
2.4    2.7    1.5    1.5    1.5    1.5   
5.5    10    5.5    5.5    5.5    5.5   
7    110    12    8.1    8.1    8.1   
-11.7    6.25    -5.5 to -13.6    -5.5 to -13.6    -5.5 or -8.2    -5.5   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
Industry standard pinout      UL Recognized    Selectable gain setting    Selectable gain setting    Industry standard pinout   
160    800    8    5.2    4.4     
Analog Output    Analog Output    Analog Output    Analog Output    Analog Output    Analog Output