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National Semiconductor Electronic Components Datasheet

LM235H Datasheet

Precision Temperature Sensors

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LM235H pdf
May 1999
LM135/LM235/LM335, LM135A/LM235A/LM335A
Precision Temperature Sensors
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 1dy-
namic 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 sen-
sors the LM135 has a linear output.
Applications for the LM135 include almost any type of tem-
perature sensing over a −55˚C to +150˚C temperature
range. The low impedance and linear output make interfac-
ing 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.
Features
n Directly calibrated in ˚Kelvin
n 1˚C initial accuracy available
n Operates from 400 µA to 5 mA
n Less than 1dynamic impedance
n Easily calibrated
n Wide operating temperature range
n 200˚C overrange
n Low cost
Schematic Diagram
DS005698-1
© 1999 National Semiconductor Corporation DS005698
www.national.com


National Semiconductor Electronic Components Datasheet

LM235H Datasheet

Precision Temperature Sensors

No Preview Available !

LM235H pdf
Connection Diagrams
TO-92
Plastic Package
SO-8
Surface Mount Package
TO-46
Metal Can Package*
DS005698-8
Bottom View
Order Number LM335Z
or LM335AZ
See NS Package
Number Z03A
DS005698-25
Order Number LM335M
See NS Package
Number M08A
DS005698-26
*Case is connected to negative pin
Bottom View
Order Number LM135H,
LM135H-MIL, LM235H,
LM335H, LM135AH,
LM235AH or LM335AH
See NS Package
Number H03H
www.national.com
2


Part Number LM235H
Description Precision Temperature Sensors
Maker National Semiconductor
Total Page 14 Pages
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