LM35AH/NOPB National Semiconductor, LM35AH/NOPB Datasheet

IC SENSOR PREC CENT TEMP TO46-3

LM35AH/NOPB

Manufacturer Part Number
LM35AH/NOPB
Description
IC SENSOR PREC CENT TEMP TO46-3
Manufacturer
National Semiconductor
Type
Sensorsr
Datasheet

Specifications of LM35AH/NOPB

Sensing Temperature
-55°C ~ 150°C
Output Type
Voltage
Voltage - Supply
4 V ~ 30 V
Accuracy
±0.2°C
Package / Case
TO-206AB, TO-46-3 Metal Can
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM35AH
*LM35AH/NOPB
LM35AH
© 2000 National Semiconductor Corporation
LM35
Precision Centigrade Temperature Sensors
General Description
The LM35 series are precision integrated-circuit temperature
sensors, whose output voltage is linearly proportional to the
Celsius (Centigrade) temperature. The LM35 thus has an
advantage over linear temperature sensors calibrated in
˚ Kelvin, as the user is not required to subtract a large
constant voltage from its output to obtain convenient Centi-
grade scaling. The LM35 does not require any external
calibration or trimming to provide typical accuracies of
at room temperature and
temperature range. Low cost is assured by trimming and
calibration at the wafer level. The LM35’s low output imped-
ance, linear output, and precise inherent calibration make
interfacing to readout or control circuitry especially easy. It
can be used with single power supplies, or with plus and
minus supplies. As it draws only 60 µA from its supply, it has
very low self-heating, less than 0.1˚C in still air. The LM35 is
rated to operate over a −55˚ to +150˚C temperature range,
while the LM35C is rated for a −40˚ to +110˚C range (−10˚
with improved accuracy). The LM35 series is available pack-
Typical Applications
FIGURE 1. Basic Centigrade Temperature Sensor
(+2˚C to +150˚C)
±
3
4
˚C over a full −55 to +150˚C
DS005516-3
DS005516
±
1
4
˚C
aged in hermetic TO-46 transistor packages, while the
LM35C, LM35CA, and LM35D are also available in the
plastic TO-92 transistor package. The LM35D is also avail-
able in an 8-lead surface mount small outline package and a
plastic TO-220 package.
Features
n Calibrated directly in ˚ Celsius (Centigrade)
n Linear + 10.0 mV/˚C scale factor
n 0.5˚C accuracy guaranteeable (at +25˚C)
n Rated for full −55˚ to +150˚C range
n Suitable for remote applications
n Low cost due to wafer-level trimming
n Operates from 4 to 30 volts
n Less than 60 µA current drain
n Low self-heating, 0.08˚C in still air
n Nonlinearity only
n Low impedance output, 0.1
FIGURE 2. Full-Range Centigrade Temperature Sensor
Choose R
V
OUT
=+1,500 mV at +150˚C
= +250 mV at +25˚C
= −550 mV at −55˚C
±
1
1
= −V
4
˚C typical
S
/50 µA
DS005516-4
for 1 mA load
November 2000
www.national.com

Related parts for LM35AH/NOPB

LM35AH/NOPB Summary of contents

Page 1

... Typical Applications DS005516-3 FIGURE 1. Basic Centigrade Temperature Sensor (+2˚C to +150˚C) © 2000 National Semiconductor Corporation aged in hermetic TO-46 transistor packages, while the LM35C, LM35CA, and LM35D are also available in the plastic TO-92 transistor package. The LM35D is also avail- able in an 8-lead surface mount small outline package and a plastic TO-220 package ...

Page 2

Connection Diagrams TO-46 Metal Can Package* DS005516-1 *Case is connected to negative pin (GND) Order Number LM35H, LM35AH, LM35CH, LM35CAH or LM35DH See NS Package Number H03H TO-92 Plastic Package DS005516-2 Order Number LM35CZ, LM35CAZ or LM35DZ See NS Package ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Output Voltage Output Current Storage Temp.; TO-46 Package, TO-92 Package, SO-8 Package, TO-220 Package, Lead Temp.: TO-46 Package, (Soldering, 10 seconds) ...

Page 4

... For additional thermal resistance information see table in the Applications section. Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output due to heating effects can be computed by multiplying the internal dissipation by the thermal resistance. ...

Page 5

... Thermal Response in Stirred Oil Bath DS005516-28 Quiescent Current vs. Temperature (In Circuit of Figure 2 .) DS005516-31 Thermal Time Constant DS005516-26 Minimum Supply Voltage vs. Temperature DS005516-29 Accuracy vs. Temperature (Guaranteed) DS005516-32 5 Thermal Response in Still Air DS005516-27 Quiescent Current vs. Temperature (In Circuit of Figure 1 .) DS005516-30 Accuracy vs. Temperature (Guaranteed) DS005516-33 www.national.com ...

Page 6

... This presumes that the ambient air temperature is almost the same as the surface temperature; if the air temperature were much higher or lower than the surface temperature, the actual temperature of the LM35 die would interme- diate temperature between the surface temperature and the air temperature. This is expecially true for the TO-92 plastic ...

Page 7

... FIGURE 5. Two-Wire Remote Temperature Sensor (Grounded Sensor) DS005516-19 FIGURE 6. Two-Wire Remote Temperature Sensor (Output Referred to Ground) DS005516-20 load resistor as FIGURE 7. Temperature Sensor, Single Supply, −55˚ to FIGURE 8. Two-Wire Remote Temperature Sensor (Output Referred to Ground) DS005516-5 FIGURE 9. 4-To-20 mA Current Source (0˚C to +100˚C) 7 DS005516-6 DS005516-7 +150˚ ...

Page 8

... Typical Applications (Continued) FIGURE 10. Fahrenheit Thermometer FIGURE 13. Temperature To Digital Converter (Serial Output) (+128˚C Full Scale) FIGURE 14. Temperature To Digital Converter (Parallel TRI-STATE Standard Data Bus to µP Interface) (128˚C Full Scale) www.national.com FIGURE 11. Centigrade Thermometer (Analog Meter) DS005516-10 FIGURE 12. Fahrenheit ThermometerExpanded Scale (50˚ ...

Page 9

... Trim R for V =3.075V B B Trim R for V =1.955V C C Trim R for V =0.075V + 100mV/˚ ambient Example, V =2.275V at 22˚C A FIGURE 15. Bar-Graph Temperature Display (Dot Mode) FIGURE 16. LM35 With Voltage-To-Frequency Converter And Isolated Output (2˚C to +150˚ 1500 Hz) 9 DS005516-16 DS005516-15 www.national.com ...

Page 10

Block Diagram www.national.com DS005516-23 10 ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted TO-46 Metal Can Package (H) Order Number LM35H, LM35AH, LM35CH, LM35CAH, or LM35DH NS Package Number H03H SO-8 Molded Small Outline Package (M) Order Number LM35DM NS Package Number M08A 11 www.national.com ...

Page 12

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) Power Package TO-220 (T) Order Number LM35DT NS Package Number TA03F 12 ...

Page 13

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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