Z
TO92
(Plastic Package
.DIRECTLY CALIBRATED IN
o
K
.1
o
C INITIAL ACCURACY
.OPERATES FROM 450µATO5mA
.LESS THAN 1Ω DYNAMICIMPEDANCE
DESCRIPTION
The LM135, LM235, LM335 are precision tempera-
ture sensors which can be easily calibrated. They
operate as a 2-terminal Zener and the breakdown
voltageis directly proportionalto the absolute tem-
peratureat 10mV/
o
K. The circuit has a dynamic im-
pedance of less than 1Ω and operates within a
range of current from 450µA to 5mAwithout altera-
tion of its characteristics. Calibrated at +25
o
C, the
LM135, LM235, LM335 have a typicalerror of less
than 1
o
C over a 100
o
C temperature range. Unlike
other sensors, the LM135, LM235, LM335 have a
linearoutput.
PIN CONNECTIONS
8765
12
34
V
NC
-
ADJ
NC
NC
V
+
NC
NC
135-02.EPS
SO8
(Top view)
V
+
ADJ
V
-
135-01.EPS
TO92
(Bottom view)
D
SO8
(Plastic Micropackage)
PRECISION TEMPERATURE SENSORS
LM135
LM235-LM335,A
ORDER CODES
Part num-
ber
Temperature
Range
Package
ZD
LM135 –55
o
C, +150
o
C ••
LM235 –40
o
C, +125
o
C ••
LM335,A –40
o
C, +100
o
C ••
October 1997
