Temperature Sensor. LM19 Datasheet

LM19 Sensor. Datasheet pdf. Equivalent

LM19 Datasheet
Recommendation LM19 Datasheet
Part LM19
Description Temperature Sensor
Feature LM19; LM19 2.4V, 10µA, TO-92 Temperature Sensor January 2003 LM19 2.4V, 10µA, TO-92 Temperature Sensor .
Manufacture National Semiconductor
Datasheet
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National Semiconductor LM19
January 2003
LM19
2.4V, 10µA, TO-92 Temperature Sensor
General Description
The LM19 is a precision analog output CMOS integrated-
circuit temperature sensor that operates over a −55˚C to
+130˚C temperature range. The power supply operating
range is +2.4 V to +5.5 V. The transfer function of LM19 is
predominately linear, yet has a slight predictable parabolic
curvature. The accuracy of the LM19 when specified to a
parabolic transfer function is ±2.5˚C at an ambient tempera-
ture of +30˚C. The temperature error increases linearly and
reaches a maximum of ±3.8˚C at the temperature range
extremes. The temperature range is affected by the power
supply voltage. At a power supply voltage of 2.7 V to 5.5 V
the temperature range extremes are +130˚C and −55˚C.
Decreasing the power supply voltage to 2.4 V changes the
negative extreme to −30˚C, while the positive remains at
+130˚C.
The LM19’s quiescent current is less than 10 µA. Therefore,
self-heating is less than 0.02˚C in still air. Shutdown capa-
bility for the LM19 is intrinsic because its inherent low power
consumption allows it to be powered directly from the output
of many logic gates or does not necessitate shutdown at all.
Applications
n Cellular Phones
n Computers
n Power Supply Modules
n Battery Management
n FAX Machines
n Printers
n HVAC
n Disk Drives
n Appliances
Features
n Rated for full −55˚C to +130˚C range
n Available in a TO-92 package
n Predictable curvature error
n Suitable for remote applications
Key Specifications
j Accuracy at +30˚C
j Accuracy at +130˚C & −55˚C
j Power Supply Voltage Range
j Current Drain
j Nonlinearity
j Output Impedance
j Load Regulation
0 µA < IL< +16 µA
±2.5 ˚C (max)
±3.5 to ±3.8 ˚C (max)
+2.4V to +5.5V
10 µA (max)
±0.4 % (typ)
160 (max)
−2.5 mV (max)
Typical Application
Output Voltage vs Temperature
20004002
VO = (−3.88x10−6xT2) + (−1.15x10−2xT) + 1.8639
or
20004024
where:
T is temperature, and VO is the measured output voltage of the LM19.
FIGURE 1. Full-Range Celsius (Centigrade) Temperature Sensor (−55˚C to +130˚C)
Operating from a Single Li-Ion Battery Cell
© 2003 National Semiconductor Corporation DS200040
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National Semiconductor LM19
Typical Application (Continued)
Temperature (T)
+130˚C
+100˚C
+80˚C
+30˚C
+25˚C
0˚C
−30˚C
−40˚C
−55˚C
Typical VO
+303 mV
+675 mV
+919 mV
+1515 mV
+1574 mV
+1863.9 mV
+2205 mV
+2318 mV
+2485 mV
Connection Diagram
TO-92
20004001
See NS Package Number Z03A
Ordering Information
Order
Number
LM19CIZ
Temperature
Accuracy
±3.8˚C
Temperature
Range
−55˚C to +130˚C
NS Package
Number
Z03A
Device
Marking
LM19CIZ
Transport Media
Bulk
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National Semiconductor LM19
Absolute Maximum Ratings (Note 1)
Supply Voltage
Output Voltage
Output Current
Input Current at any pin (Note 2)
Storage Temperature
Maximum Junction Temperature
(TJMAX)
ESD Susceptibility (Note 3) :
Human Body Model
Machine Model
+6.5V to −0.2V
(V+ + 0.6 V) to
−0.6 V
10 mA
5 mA
−65˚C to
+150˚C
+150˚C
2500 V
250 V
Lead Temperature
TO-92 Package
Soldering (3 seconds dwell)
+240˚C
Operating Ratings(Note 1)
Specified Temperature Range:
2.4 V V+2.7 V
2.7 V V+5.5 V
Supply Voltage Range (V+)
Thermal Resistance, θJA(Note 4)
TO-92
TMIN TA TMAX
−30˚C TA +130˚C
−55˚C TA +130˚C
+2.4 V to +5.5 V
150˚C/W
Electrical Characteristics
Unless otherwise noted, these specifications apply for V+ = +2.7 VDC. Boldface limits apply for TA = TJ = TMIN to TMAX ; all
other limits TA = TJ = 25˚C; Unless otherwise noted.
Parameter
Conditions
Typical
LM19C
Units
(Note 5)
Limits
(Limit)
(Note 6)
Temperature to Voltage Error
VO = (−3.88x10−6xT2)
+ (−1.15x10−2xT) + 1.8639V
(Note 7)
Output Voltage at 0˚C
TA = +25˚C to +30˚C
TA = +130˚C
TA = +125˚C
TA = +100˚C
TA = +85˚C
TA = +80˚C
TA = 0˚C
TA = −30˚C
TA = −40˚C
TA = −55˚C
+1.8639
±2.5
±3.5
±3.5
±3.2
±3.1
±3.0
±2.9
±3.3
±3.5
±3.8
˚C (max)
˚C (max)
˚C (max)
˚C (max)
˚C (max)
˚C (max)
˚C (max)
˚C (min)
˚C (max)
˚C (max)
V
Variance from Curve
±1.0
˚C
Non-Linearity (Note 8)
Sensor Gain (Temperature
Sensitivity or Average Slope)
−20˚C TA +80˚C
−30˚C TA +100˚C
±0.4
−11.77
−11.0
−12.6
%
mV/˚C (min)
mV/˚C (max)
to equation:
VO=−11.77 mV/˚CxT+1.860V
Output Impedance
0 µA IL +16 µA
(Notes 10, 11)
160 (max)
Load Regulation(Note 9)
0 µA IL +16 µA
(Notes 10, 11)
−2.5
mV (max)
Line Regulation
+2. 4 V V+ +5.0V
+3.7
mV/V (max)
+5.0 V V+ +5.5 V
+11 mV (max)
Quiescent Current
+2. 4 V V+ +5.0V
4.5 7 µA (max)
+5.0V V+ +5.5V
4.5 9 µA (max)
+2. 4 V V+ +5.0V
4.5 10 µA (max)
Change of Quiescent Current
+2. 4 V V+ +5.5V
+0.7
µA
Temperature Coefficient of
−11 nA/˚C
Quiescent Current
Shutdown Current
V+ +0.8 V
0.02
µA
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