參數(shù)資料
型號: LM61
廠商: National Semiconductor Corporation
元件分類: 溫度/濕度傳感器
英文描述: 2.7V, SOT-23 or TO-92 Temperature Sensor
中文描述: 為2.7V,采用SOT - 23或TO - 92溫度傳感器
文件頁數(shù): 1/9頁
文件大小: 242K
代理商: LM61
LM61
2.7V, SOT-23 or TO-92 Temperature Sensor
General Description
The LM61 is a precision integrated-circuit temperature sen-
sor that can sense a 30C to +100C temperature range
while operating from a single +2.7V supply. The LM61’s out-
put voltage is linearly proportional to Celsius (Centigrade)
temperature (+10 mV/C) and has a DC offset of +600 mV.
The offset allows reading negative temperatures without the
need for a negative supply. The nominal output voltage of the
LM61 ranges from +300 mV to +1600 mV for a 30C to
+100C temperature range. The LM61 is calibrated to pro-
vide accuracies of
±
2.0C at room temperature and
±
3C
over the full 25C to +85C temperature range.
The LM61’s linear output, +600 mV offset, and factory cali-
bration simplify external circuitry required in a single supply
environment where reading negative temperatures is re-
quired. Because the LM61’s quiescent current is less than
125 μA, self-heating is limited to a very low 0.2C in still air.
Shutdown capability for the LM61 is intrinsic because its in-
herent low power consumption allows it to be powered di-
rectly from the output of many logic gates.
Features
n
Calibrated linear scale factor of +10 mV/C
n
Rated for full 30 to +100C range
n
Suitable for remote applications
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
Key Specifications
n
Accuracy at 25C
±
2.0 or
±
3.0C
(max)
n
Accuracy for 30C to +100C
n
Accuracy for 25C to +85C
n
Temperature Slope
n
Power Supply Voltage Range
n
Current Drain
@
25C
n
Nonlinearity
n
Output Impedance
±
4.0C (max)
±
3.0C (max)
+10 mV/C
+2.7V to +10V
125 μA (max)
±
0.8C (max)
800
(max)
Typical Application
DS012897-2
V
O
= (+10 mV/C x T C) + 600 mV
Temperature (T)
+100C
+85C
+25C
0C
25C
30C
Typical V
O
+1600 mV
+1450 mV
+850 mV
+600 mV
+350 mV
+300 mV
FIGURE 1. Full-Range Centigrade Temperature Sensor (30C to +100C)
Operating from a Single Li-Ion Battery Cell
June 1999
L
1999 National Semiconductor Corporation
DS012897
www.national.com
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