SNIS160E May   1999  – February 2015 LM135 , LM135A , LM235 , LM235A , LM335 , LM335A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Temperature Accuracy: LM135/LM235, LM135A/LM235A
    5. 6.5 Temperature Accuracy: LM335, LM335A
    6. 6.6 Electrical Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Temperature Calibration Using ADJ Pin
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 Thermocouple Cold Junction Compensation
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Waterproofing Sensors
    4. 10.4 Mounting the Sensor at the End of a Cable
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
    2. 11.2 Related Links
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)(3)(2)(4)
MIN MAX UNIT
Reverse Current 15 mA
Forward Current 10 mA
Storage temperature, Tstg 8-Pin SOIC Package −65 150 °C
TO / TO-92 Package −60 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.
(3) Refer to RETS135H for military specifications.
(4) Soldering process must comply with the Reflow Temperature Profile specifications. Refer to http://www.ti.com/packaging.

6.2 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
Specified Temperature LM135, LM135A Continuous (TMIN ≤ TA ≤ TMAX) −55 150 °C
Intermittent (1) 150 200
LM235, LM235A Continuous (TMIN ≤ TA ≤ TMAX) −40 125 °C
Intermittent (1) 125 150
LM335, LM335A Continuous (TMIN ≤ TA ≤ TMAX) −40 100 °C
Intermittent (1) 100 125
Forward Current 0.4 1 5 mA
(1) Continuous operation at these temperatures for 5,000 hours for LP package may decrease life expectancy of the device.

6.3 Thermal Information

THERMAL METRIC(1) LM335 / LM335A LM235 / LM235A LM135 / LM135A UNIT
SOIC (D) TO-92 (LP) TO-46 (NDV)
8 PINS 3 PINS 3 PINS
RθJA Junction-to-ambient thermal resistance 165 202 400 °C/W
RθJC Junction-to-case thermal resistance — 170 —
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.4 Temperature Accuracy: LM135/LM235, LM135A/LM235A(1)

PARAMETER TEST CONDITIONS LM135A/LM235A LM135/LM235 UNIT
MIN TYP MAX MIN TYP MAX
Operating Output Voltage TC = 25°C, IR = 1 mA 2.97 2.98 2.99 2.95 2.98 3.01 V
Uncalibrated Temperature Error TC = 25°C, IR = 1 mA 0.5 1 1 3 °C
Uncalibrated Temperature Error TMIN ≤ TC ≤ TMAX, IR = 1 mA 1.3 2.7 2 5 °C
Temperature Error with 25°C TMIN ≤ TC ≤ TMAX, IR = 1 mA 0.3 1 0.5 1.5 °C
Calibration Calibrated Error at Extended TC = TMAX (Intermittent) 2 2 °C
Temperature Non-Linearity IR = 1 mA 0.3 0.5 0.3 1 °C

6.5 Temperature Accuracy: LM335, LM335A(1)

PARAMETER TEST CONDITIONS LM335A LM335 UNIT
MIN TYP MAX MIN TYP MAX
Operating Output Voltage TC = 25°C, IR = 1 mA 2.95 2.98 3.01 2.92 2.98 3.04 V
Uncalibrated Temperature Error TC = 25°C, IR = 1 mA 1 3 2 6 °C
Uncalibrated Temperature Error TMIN ≤ TC ≤ TMAX, IR = 1 mA 2 5 4 9 °C
Temperature Error with 25°C TMIN ≤ TC ≤ TMAX, IR = 1 mA 0.5 1 1 2 °C
Calibration Calibrated Error at Extended TC = TMAX (Intermittent) 2 2 °C
Temperature Non-Linearity IR = 1 mA 0.3 1.5 0.3 1.5 °C

6.6 Electrical Characteristics

See (1).
PARAMETER TEST CONDITIONS LM135/LM235/LM135A/LM235A LM335/LM335A UNIT
MIN TYP MAX MIN TYP MAX
Operating Output Voltage Change with Current 400 μA ≤ IR ≤ 5 mA, At Constant Temperature 2.5 10 3 14 mV
Dynamic Impedance IR = 1 mA 0.5 0.6 Ω
Output Voltage Temperature Coefficient 10 10 mV/°C
Time Constant Still Air 80 80 sec
100 ft/Min Air 10 10 sec
Stirred Oil 1 1 sec
Time Stability TC = 125°C 0.2 0.2 °C/khr
(1) Accuracy measurements are made in a well-stirred oil bath. For other conditions, self heating must be considered.

6.7 Typical Characteristics

569827.pngFigure 1. Reverse Voltage Change
569829.pngFigure 3. Reverse Characteristics
569831.pngFigure 5. Dynamic Impedance
569833.pngFigure 7. Thermal Resistance Junction To Air
569835.pngFigure 9. Thermal Response In Still Air
569837.pngFigure 11. Forward Characteristics
569828.pngFigure 2. Calibrated Error
569830.pngFigure 4. Response Time
569832.pngFigure 6. Noise Voltage
569834.pngFigure 8. Thermal Time Constant
569836.pngFigure 10. Thermal Response In Stirred Oil Bath