±0.5°C Temperature Sensor with Analog Output with 30V Capability - LM35

LM35 (ACTIVE)

±0.5°C Temperature Sensor with Analog Output with 30V Capability

 

Description

The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full −55°C to 150°C temperature range. Lower cost is assured by trimming and calibration at the wafer level. The low-output impedance, linear output, and precise inherent calibration of the LM35 device makes interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 device draws only 60 µA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 device is rated to operate over a −55°C to 150°C temperature range, while the LM35C device is rated for a −40°C to 110°C range (−10° with improved accuracy). The LM35-series devices are available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D devices are available in the plastic TO-92 transistor package. The LM35D device is available in an 8-lead surface-mount small-outline package and a plastic TO-220 package.

Features

  • Calibrated Directly in Celsius (Centigrade)
  • Linear + 10-mV/°C Scale Factor
  • 0.5°C Ensured Accuracy (at 25°C)
  • Rated for Full −55°C to 150°C Range
  • Suitable for Remote Applications
  • Low-Cost Due to Wafer-Level Trimming
  • Operates from 4 V to 30 V
  • Less than 60-µA Current Drain
  • Low Self-Heating, 0.08°C in Still Air
  • Non-Linearity Only ±¼°C Typical
  • Low-Impedance Output, 0.1 Ω for 1-mA Load

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Parametrics Compare all products in Temperature Sensor

 
Interface
Operating Temperature Range (C)
Local Sensor Accuracy (Max) (+/- C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Rating
Package Group
Package Size: mm2:W x L (PKG)
LM35 LM135 LM135A LM235 LM335
Analog Output    Analog Output    Analog Output    Analog Output    Analog Output   
-40 to 110
-55 to 150
0 to 100
0 to 70   
-55 to 150    -55 to 150    -40 to 125    -40 to 100   
0.5    3    1    3    6   
4    5    5    5    5   
30           
Military    Military    Military    Military    Military   
SOIC
TO
TO-220
TO-92   
TO    TO    TO    SOIC
TO-92
TO   
3TO-92: 19 mm2: 3.68 x 5.2(TO-92)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
3TO: 35 mm2: 5.44 x 6.41(TO)   
3TO: 35 mm2: 5.44 x 6.41(TO)    3TO: 35 mm2: 5.44 x 6.41(TO)    3TO: 35 mm2: 5.44 x 6.41(TO)    3TO-92: 19 mm2: 3.68 x 5.2(TO-92)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
3TO: 35 mm2: 5.44 x 6.41(TO)