LM135
LM235-LM335,A
PRECISION TEMPERATURE SENSORS
.
.
.
.
DIRECTLY CALIBRATED IN
o
K
1
o
C INITIAL ACCURACY
OPERATES FROM 450µA TO 5mA
LESS THAN 1Ω DYNAMIC IMPEDANCE
Z
TO92
(Plastic Package
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
voltage is directly proportional to the absolute tem-
perature at 10mV/
o
K. The circuit has a dynamic im-
pedance of less than 1Ω and operates within a
range of current from 450µA to 5mA without altera-
tion of its characteristics. Calibrated at +25
o
C, the
LM135, LM235, LM335 have a typical error of less
than 1
o
C over a 100
o
C temperature range. Unlike
other sensors, the LM135, LM235, LM335 have a
linear output.
PIN CONNECTIONS
TO92
(Bottom view)
V+
8
D
SO8
(Plastic Micropackage)
ORDER CODES
Part num-
ber
LM135
LM235
LM335,A
Temperature
Range
–55 C, +150 C
–40 C, +125 C
–40 C, +100 C
o
o
o
o
o
o
Package
Z
•
•
•
D
•
•
•
SO8
(Top view)
NC
7
NC
6
ADJ
5
ADJ
V+
V-
135-01.EPS
1
NC
2
NC
3
NC
4
-
V
October 1997
135-02.EPS
STMICROELECTRONICS [ STMICROELECTRONICS ]
