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Part: LM335ADT
Category:
Description: Precision Temperature Sensors
Company: ST Microelectronics, Inc.
Datasheet: Download LM335ADT datasheet File size : 113 kB
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Datasheet text preview:
LM13 5 L M 2 3 5 - L M 3 3 5 ,A
PRECISION TEMPERATURE SENSORS
. . . .
DIRECTLY CALIBRATED IN oK 1oC INITIAL ACCURACY OPERATES FROM 450ľA TO 5mA LESS THAN 1 DYNAMIC IMPEDANCE
Z TO92 (Plastic Package
DE SC RI P T I O N The LM135, LM235, LM335 are precision temperature sensors which can be easily calibrated. They operate as a 2-terminal Zener and the breakdown voltage is directly proportional to the absolute temperature at 10mV/oK. The circuit has a dynamic impedan ce of less than 1 and operates within a range of current from 450ľA to 5mA without alteration of its characteristics. Calibrated at +25oC, the LM135, LM235, LM335 have a typical error of less than 1oC over a 100oC temperature range. Unlike other sensors, the LM135, LM235, LM335 have a linear output . P I N CO NNEC T I O NS
TO92 (Bottom view)
V+ 8
D SO8 (Plastic Micropackage)
ORDER CODES
Part n umber 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 ˇ ˇ ˇ D ˇ ˇ ˇ
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
L M 13 5- L M 2 35 -L M 335 , A
S CHE MATI C DI AG RAM
1V 5 0 k
49k
49k
15.6k
3 pF
10 k
1 2pF
60 0 30 k
2 AD J
13.8k
2 k
1. 1 k
3V
ABSOLUTE MAXIMUM RATINGS
Symbol IR IF Toper Current Reverse Forward Operating Free-air Temperature Range - (note 1) Continuous Intermittent Storage Temperature Range
o
Parameter
LM135 15 10 55 to +150 +150 to +200 65 to +150
LM235 15 10 40 to +125 +125 to +150 65 to +150
LM335,A 15 10
Unit mA
o
C
40 to +100 + 100 to +125 65 to +150
o
Tstg
C
N ote : 1. Tj 150 C
2/11
L M 135 -L M 2 35- L M 33 5, A
TEMPERATURE ACCURACY
Parameter Operating Output Voltage Tcase = +25oC, IR = 1m A Uncalibrated Temperature Error (IR = 1mA) o Tcase = +25 C Tmin. Tcase Tmax. Temperature Error with 25 C Calibration Tmin. Tcase Tmax., IR = 1mA LM135 - LM235 LM335 LM335A Calibrated Error at Extended Temperature Tcase = Tmax. (intermittent) Non-linearity (IR = 1mA) LM135 - LM235 LM335 LM335A
o
LM 135 - LM235 LM335A Min. 2.95 Typ. 2.98 1 2 0.5 0.5 2 0.3 0.3 1 Max. 3.01 3 5 1.5 Min. 2.92
LM335 Typ. 2.98 2 4 Max.
Unit V 3.04
o
C
6 9
o
C
1 1
2
o
C C
2
o
0.3 1.5
1.5
ELECTRICAL CHARACTERISTICS - (note 1)
Parameter O perating output voltage change with current 450ľA IR 5mA at constant temperature D ynamic Im pedance (IR = 1m A) O utput Voltage Tem perature Drift T ime C onstant
o
LM 135 - LM235 Min. Typ. 2.5 0.5 +10 Still Ai r Air 0.5m/s Stirred Oil 80 10 1 0.2 Max. 10 Min.
LM335,A Typ. 3 0.6 + 10 80 10 1 0.2
o
Max. 14
Unit mV mV/ C s
o
T ime Stability (Tcase = +125 C)
C/kh
Note : 1. A ccuracy measurements are made in a w ell- st ir red oil bath. F or other conditio ns, self heating must be considered.
3/11
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