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5PCS lm 35 d precision centigrade temperature sensors
LM 35 D Precision Centigrade Temperature Sensors TO-92
Precision Centigrade Temperature Sensors
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 Centigrade
scaling. The LM35 does not require any external calibration
or trimming to provide typical accuracies of g(/4 C
at room temperature and g*/4 C over a full b55 to a150 C
temperature range. Low cost is assured by trimming and
calibration at the wafer level. The LM35's low output impedance,
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 mA 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 b55 to a150 C temperature
range, while the LM35C is rated for a b40 to a110 C
range (b10 with improved accuracy). The LM35 series is
available packaged 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
available in an 8-lead surface mount small outline package
Y Calibrated directly in Celsius (Centigrade)
Y Linear a 10.0 mV/ C scale factor
Y 0.5 C accuracy guaranteeable (at a25 C)
Y Rated for full b55 to a150 C range
Y Suitable for remote applications
Y Low cost due to wafer-level trimming
Y Less than 60 mA current drain
Y Low self-heating, 0.08 C in still air
Y Nonlinearity only g(/4 C typical
Y Low impedance output, 0.1 X for 1 mA load
Electrical Characteristics (Note 1) (Note 6) (Continued)
Tested Design Tested Design Units
Typical Limit Limit Typical Limit Limit (Max.)
(Note 4) (Note 5) (Note 4) (Note 5)
Accuracy, TAea25 C g0.4 g1.0 g0.4 g1.0 C
LM35, LM35C TAeb10 C g0.5 g0.5 g1.5 C
(Note 7) TAeTMAX g0.8 g1.5 g0.8 g1.5 C
TAeTMIN g0.8 g1.5 g0.8 g2.0 C
Accuracy, TAea25 C g0.6 g1.5 C
Nonlinearity TMINsTAsTMAX g0.3 g0.5 g0.2 g0.5 C
Sensor Gain TMINsTAsTMAX a10.0 a9.8, a10.0 a9.8, mV/ C
Load Regulation TAea25 C g0.4 g2.0 g0.4 g2.0 mV/mA
(Note 3) 0sILs1 mA TMINsTAsTMAX g0.5 g5.0 g0.5 g5.0 mV/mA
Line Regulation TAea25 C g0.01 g0.1 g0.01 g0.1 mV/V
(Note 3) 4VsVSs30V g0.02 g0.2 g0.02 g0.2 mV/V
Quiescent Current VSea5V, a25 C 56 80 56 80 mA
(Note 9) VSea5V 105 158 91 138 mA
VSea30V, a25 C 56.2 82 56.2 82 mA
Change of 4VsVSs30V, a25 C 0.2 2.0 0.2 2.0 mA
Quiescent Current 4VsVSs30V 0.5 3.0 0.5 3.0 mA
Temperature a0.39 a0.7 a0.39 a0.7 mA/ C
Minimum Temperature In circuit of a1.5 a2.0 a1.5 a2.0 C
for Rated Accuracy Figure 1 , ILe0
Long Term Stability TJeTMAX, for g0.08 g0.08 C
