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LM35DZ Folha de dados(PDF) 7 Page - National Semiconductor (TI) |
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LM35DZ Folha de dados(HTML) 7 Page - National Semiconductor (TI) |
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7 / 13 page  Typical Applications CAPACITIVE LOADS Like most micropower circuits, the LM35 has a limited ability to drive heavy capacitive loads. The LM35 by itself is able to drive 50 pf without special precautions. If heavier loads are anticipated, it is easy to isolate or decouple the load with a resistor; see Figure 3. Or you can improve the tolerance of capacitance with a series R-C damper from output to ground; see Figure 4. When the LM35 is applied with a 200 Ω load resistor as shown in Figure 5, Figure 6 or Figure 8 it is relatively immune to wiring capacitance because the capacitance forms a by- pass from ground to input, not on the output. However, as with any linear circuit connected to wires in a hostile envi- ronment, its performance can be affected adversely by in- tense electromagnetic sources such as relays, radio trans- mitters, motors 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 Ω in series with 0.2 or 1 µF from output to ground are often useful. These are shown in Figure 13, Figure 14, and Figure 16. DS005516-19 FIGURE 3. LM35 with Decoupling from Capacitive Load DS005516-20 FIGURE 4. LM35 with R-C Damper DS005516-5 FIGURE 5. Two-Wire Remote Temperature Sensor (Grounded Sensor) DS005516-6 FIGURE 6. Two-Wire Remote Temperature Sensor (Output Referred to Ground) DS005516-7 FIGURE 7. Temperature Sensor, Single Supply, −55˚ to +150˚C DS005516-8 FIGURE 8. Two-Wire Remote Temperature Sensor (Output Referred to Ground) DS005516-9 FIGURE 9. 4-To-20 mA Current Source (0˚C to +100˚C) www.national.com 7 |
Nº de peça semelhante - LM35DZ |
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Descrição semelhante - LM35DZ |
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