Datenblatt-Suchmaschine für elektronische Bauteile |
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LM19 Datenblatt(PDF) 7 Page - Texas Instruments |
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LM19 Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 14 page LM19 www.ti.com SNIS122E – MAY 2001 – REVISED MARCH 2013 Capacitive Loads The LM19 handles capacitive loading well. Without any precautions, the LM19 can drive any capacitive load less than 300 pF as shown in Figure 3. Over the specified temperature range the LM19 has a maximum output impedance of 160 Ω. In an extremely noisy environment it may be necessary to add some filtering to minimize noise pickup. It is recommended that 0.1 μF be added from V+ to GND to bypass the power supply voltage, as shown in Figure 4. In a noisy environment it may even be necessary to add a capacitor from the output to ground with a series resistor as shown in Figure 4. A 1 μF output capacitor with the 160 Ω maximum output impedance and a 200 Ω series resistor will form a 442 Hz lowpass filter. Since the thermal time constant of the LM19 is much slower, the overall response time of the LM19 will not be significantly affected. Figure 3. LM19 No Decoupling Required for Capacitive Loads Less than 300 pF Table 3. LM19 with Filter for Noisy Environment and Capacitive Loading greater than 300 pF R ( Ω) C (µF) 200 1 470 0.1 680 0.01 1 k 0.001 Either placement of resistor as shown above is just as effective. Figure 4. LM19 with Filter for Noisy Environment and Capacitive Loading greater than 300 pF Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM19 |
Ähnliche Teilenummer - LM19_15 |
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Ähnliche Beschreibung - LM19_15 |
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