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LM4940 Folha de dados(PDF) 1 Page - National Semiconductor (TI) |
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LM4940 Folha de dados(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page LM4940 6W Stereo Audio Power Amplifier General Description The LM4940 is a dual audio power amplifier primarily de- signed for demanding applications in flat panel monitors and TV’s. It is capable of delivering 6 watts per channel to a 4 Ω load with less than 10% THD+N while operating on a 14.4V DC power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4940 does not require boot- strap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and mini- mal size. The LM4940 features a low-power consumption active-low shutdown mode. Additionally, the LM4940 features an inter- nal thermal shutdown protection mechanism along with short circuit protection. The LM4940 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4940 is a unity-gain stable and can be configured by external gain-setting resistors. Key Specifications j Quiscent Power Supply Current 40mA (max) j POUT (SE) V DD = 14.4V, RL =4 Ω, 10% THD+N 6W (typ) j Shutdown current 40µA (typ) Features n Pop & click circuitry eliminates noise during turn-on and turn-off transitions n Low current, active-low shutdown mode n Low quiescent current n Stereo 6W output, R L =4 Ω n Short circuit protection n Unity-gain stable n External gain configuration capability Applications n Flat Panel Monitors n Flat Panel TV’s n Computer Sound Cards Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. 20075672 FIGURE 1. Typical Stereo Audio Amplifier Application Circuit April 2005 © 2005 National Semiconductor Corporation DS200756 www.national.com |
Nº de peça semelhante - LM4940 |
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Descrição semelhante - LM4940 |
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