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LM20BIM7X 产品手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
温度传感器
封装:
SC-70-5
描述:
LM20 2.4V ， 10μA ， SC70 ， DSBGA温度传感器 LM20 2.4V, 10μA, SC70, DSBGA Temperature Sensor
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LM20BIM7X数据手册
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LM20
2.4V, 10µA, SC70, micro SMD Temperature Sensor
General Description
The LM20 is a precision analog output CMOS
integrated-circuit temperature sensor that operates over a
−55˚C to +130˚C temperature range. The power supply op-
erating range is +2.4 V to +5.5 V. The transfer function of
LM20 is predominately linear, yet has a slight predictable
parabolic curvature. The accuracy of the LM20 when speci-
fied to a parabolic transfer function is
±
1.5˚C at an ambient
temperature of +30˚C. The temperature error increases lin-
early and reaches a maximum of
±
2.5˚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 LM20’s quiescent current is less than 10 µA. Therefore,
self-heating is less than 0.02˚C in still air. Shutdown capabil-
ity for the LM20 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 an SC70 and a micro SMD package
n Predictable curvature error
n Suitable for remote applications
Key Specifications
n Accuracy at +30˚C
±
1.5 to
±
4 ˚C (max)
n Accuracy at +130˚C & −55˚C
±
2.5 to
±
5 ˚C (max)
n Power Supply Voltage Range +2.4V to +5.5V
n Current Drain 10 µA (max)
n Nonlinearity
±
0.4
%
(typ)
n Output Impedance 160 Ω (max)
n Load Regulation
0µA
<
I
L
<
+16 µA −2.5 mV (max)
Typical Application
DS100908-2
V
O
=
(−3.88x10
−6
xT
2
) + (−1.15x10
−2
xT) + 1.8639
or
where:
T is temperature, and V
O
is the measured output voltage of the LM20.
Output Voltage vs Temperature
DS100908-24
Full-Range Celsius (Centigrade) Temperature Sensor (−55˚C to +130˚C)
Operating from a Single Li-Ion Battery Cell
October 1999
LM20 2.4V, 10µA, SC70, micro SMD Temperature Sensor
© 1999 National Semiconductor Corporation DS100908 www.national.com
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