Anterwell Technology Ltd.
Large Original stock of IC Electronics Components, Transistors, Diodes etc.
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Supply Voltage: | –0.2 To 35 V | Output Voltage: | –1 To 6 V |
---|---|---|---|
Output Current: | 10 MA | Electrostatic Discharge (ESD) Susceptibility: | 2500 V |
Specified Operating Temperature: | 0 To 100°C | Storage Temperature: | –65 To 150°C |
High Light: | electronic integrated circuit,linear integrated circuits |
LM35 Precision Centigrade Temperature Sensors
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 to 30 V
• Less than 60-μA Current Drain
• Low Self-Heating, 0.08°C in Still Air
• Nonlinearity Only ±¼°C Typical
• Low Impedance Output, 0.1 W for 1 mA Load
DESCRIPTION
The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade temperature. Thus the LM35 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 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. Low cost is assured by trimming and calibration at the wafer level. The low output impedance, linear output, and precise inherent calibration of the LM35 make 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 draws only 60 μA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 is rated to operate over a −55°C to +150°C temperature range, while the LM35C is rated for a −40°C to +110°C range (−10° with improved accuracy). The LM35 series is available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D are also available in the plastic TO-92 transistor package. The LM35D is also available in an 8-lead surface-mount smalloutline package and a plastic TO-220 package.
ABSOLUTE MAXIMUM RATINGS(1)(2)
MIN | MAX | UNIT | |||
Supply voltage | –0.2 | 35 | V | ||
Output voltage | -1 | 6 | V | ||
Output current | 10 | mA | |||
Electrostatic discharge (ESD) susceptibility(3) | 2500 | V | |||
Storage temperature | TO Package | –60 | 180 | °C | |
TO-92 Package | –60 | 150 | |||
TO-220 Package | –65 | 150 | |||
SOIC-8 Package | –65 | 150 | |||
Lead temperature | TO Package (soldering, 10 seconds) | 300 | °C | ||
TO-92 and TO-220 Package (soldering, 10 seconds) | 260 | ||||
SOIC Package | Infrared (15 seconds) | 220 | |||
Vapor phase (60 seconds) | 215 | ||||
Specified operating temperature range: TMIN to TMAX (4) |
LM35, LM35A | –55 | 150 | °C | |
LM35C, LM35CA | –40 | 110 | |||
LM35D | 0 | 100 |
(1) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications.
(2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its rated operating conditions. See Note 1.
(3) Human body model, 100 pF discharged through a 1.5-kW resistor.
(4) Thermal resistance of the TO-46 package is 400°C/W, junction to ambient, and 24°C/W junction to case. Thermal resistance of the TO- 92 package is 180°C/W junction to ambient. Thermal resistance of the small outline molded package is 220°C/W junction to ambient. Thermal resistance of the TO-220 package is 90°C/W junction to ambient. For additional thermal resistance information see table in the APPLICATIONS section.
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