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參數(shù)資料
| 型號(hào)： | LM45CIM3X/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 溫度/濕度傳感器 |
| 英文描述： | LM45 SOT-23 Precision Centigrade Temperature Sensors; Package: SOT-23; No of Pins: 3; Qty per Container: 3000/Reel |
| 中文描述： | ANALOG TEMP SENSOR-VOLTAGE, -.2-1V, 4Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | SOT-23, 3 PIN |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 652K |
| 代理商： | LM45CIM3X/NOPB |
Typical Applications
CAPACITIVE LOADS
Like most micropower circuits, the LM45 has a limited ability
to drive heavy capacitive loads. The LM45 by itself is able to
drive 500 pF without special precautions. If heavier loads are
anticipated, it is easy to isolate or decouple the load with a
resistor; see Figure 4. Or you can improve the tolerance of
capacitance with a series R-C damper from output to
ground; see Figure 5.
Any linear circuit connected to wires in a hostile environment
can have its performance affected adversely by intense elec-
tromagnetic sources such as relays, radio transmitters, mo-
tors with arcing brushes, SCR transients, etc, as its wiring
can act as a receiving antenna and its internal junctions can
act as rectifiers. For best results in such cases, a bypass
capacitor from V
IN to ground and a series R-C damper such
as 75
in series with 0.2 or 1 F from output to ground, as
shown in Figure 5, are often useful.
01175408
FIGURE 4. LM45 with Decoupling from Capacitive Load
01175409
FIGURE 5. LM45 with R-C Damper
01175412
FIGURE 6. Temperature Sensor,
Single Supply, 20C to +100C
01175414
FIGURE 7. 4-to-20 mA Current Source (0C to +100C)
01175415
FIGURE 8. Fahrenheit Thermometer
01175416
FIGURE 9. Centigrade Thermometer (Analog Meter)
LM45
www.national.com
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