LM135 - Precision Temperature Sensor
Datasheet Packaging Samples & Pricing Application Notes Knowledge Base

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

General Description


The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. More...


  Typical Application
*click for larger image


ParametersValues
Temperature Accuracy (+/-) 3 deg C
Supply Min 5 Volt
Quiescent Current_ 1000 uA
Temperature Min -55 deg C
Temperature Max 150 deg C
Sensor Gain 10 mV/Deg K
Single Supply Yes
Output Impedance 0.5 Ohm
Quiescent Current 1 mA


Typical Performance


*click for larger image


  Additional Resources
Application Notes


Connection Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM135/LM235/LM335, LM135A/LM235A/LM335A Precision Temperature Sensors 857
Kbytes
17-Dec-08 Download
LM135 Mil-Aero Datasheet MNLM135-X 14 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM135HTO-463NOPB
STD
1
1
NA
NA
RoHS N/A Full productionN/A
 
Buy Now
250+$5.90box
of
1000
NSXYTTE# LM135H
6 weeks1000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM135G MW8
NONE
NONE
07 Dec 1999
LM135H-MIL
LM135AH
NATIONAL SEMICONDUCTOR
03 Dec 2008

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 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-46 transistor packages while the LM335 is also available in plastic TO-92 packages.

Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-285: Application Note 285 An Acoustic Transformer Powered Super‐High Isolation Amplifier 172
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AN-225: Application Note 225 IC Temperature Sensor Provides Thermocouple Cold-Junction Compensation 89
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2-Oct-02 Download
AN-262: Application Note 262 Applying Dual and Quad FET Op Amps 416
Kbytes
2-Oct-02 Download

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More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-292: Application Note 292 Applications of the LM3524 Pulse-Width-Modulator 239
Kbytes
3-Oct-02 Download
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AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors 306
Kbytes
20-Sep-02 Download
AN-460 (Japanese): Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors
322 Kbytes   Download
AN-D: Application Note D Versatile Monolithic V/Fs can Compute as Well as Convert with High Accuracy 248
Kbytes
3-Oct-02 Download
AN-C: Application Note C V/F Converter ICs Handle Frequency-to-Voltage Needs 187
Kbytes
3-Oct-02 Download
AN-211: Application Note 211 New Op Amp Ideas 620
Kbytes
2-Oct-02 Download

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[Information as of 8-Nov-2009]