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LM45 bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM45
Giải thích chi tiết về linh kiện  SOT-23 Precision Centigrade Temperature Sensors
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LM45
SOT-23 Precision Centigrade Temperature Sensors
General Description
The LM45 series are precision integrated-circuit temperature
sensors, whose output voltage is linearly proportional to the
Celsius (Centigrade) temperature. The LM45 does not re-
quire any external calibration or trimming to provide accura-
cies of ±2˚C at room temperature and ±3˚C over a full −20 to
+100˚C temperature range. Low cost is assured by trimming
and calibration at the wafer level. The LM45’s low output
impedance, linear output, and precise inherent calibration
make interfacing to readout or control circuitry especially
easy. It can be used with a single power supply, or with plus
and minus supplies. As it draws only 120 µA from its supply,
it has very low self-heating, less than 0.2˚C in still air. The
LM45 is rated to operate over a −20˚ to +100˚C temperature
range.
Applications
n
Battery Management
n
FAX Machines
n
Printers
n
Portable Medical Instruments
n
HVAC
n
Power Supply Modules
n
Disk Drives
n
Computers
n
Automotive
Features
n
Calibrated directly in ˚ Celsius (Centigrade)
n
Linear + 10.0 mV/˚C scale factor
n ±
3˚C accuracy guaranteed
n
Rated for full −20˚ to +100˚C range
n
Suitable for remote applications
n
Low cost due to wafer-level trimming
n
Operates from 4.0V to 10V
n
Less than 120 µA current drain
n
Low self-heating, 0.20˚C in still air
n
Nonlinearity only ±0.8˚C max over temp
n
Low impedance output, 20
Ω for 1 mA load
Connection Diagram
SOT-23
01175401
Top View
See NS Package Number mf03a
Order
Device
Number
Top Mark
Supplied As
LM45BIM3
T4B
1000 Units on Tape and Reel
LM45BIM3X
T4B
3000 Units on Tape and Reel
LM45CIM3
T4C
1000 Units on Tape and Reel
LM45CIM3X
T4C
3000 Units on Tape and Reel
August 2005
© 2005 National Semiconductor Corporation
DS011754
www.national.com


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