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LM4864MM Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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LM4864MM Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
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1 / 10 page  LM4864 300 mW Audio Power Amplifier with Shutdown Mode General Description The LM4864 is a bridged audio power amplifier capable of delivering 300 mW of continuous average power into an 8 Ω load with 1% (THD) from a 5V power supply. Boomer® audio power amplifiers were designed specifically to provide high quality output power from a low supply volt- age while requiring a minimal amount of external compo- nents. Since the LM4864 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications. The LM4864 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protec- tion. The closed loop response of the unity-gain stable LM4864, can be configured by external gain-setting resistors. The de- vice is available in multiple package types to suit various ap- plications. Key Specifications n THD at 1 kHz at 300 mW continuous average output power into 8 Ω 1.0% (max) n THD at 1 kHz at 300 mW continuous average output power into 16 Ω 1.0% (max) n Shutdown current 0.7 µA (typ) Features n MSOP, SOP, and DIP packaging n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Thermal shutdown protection circuitry n Unity-gain stable n External gain configuration capability Applications n Cellular Phones n Personal Computers n General Purpose Audio Typical Application Connection Diagram Boomer® is a registered trademark of National Semiconductor Corporation. DS012607-1 FIGURE 1. Typical Audio Amplifier Application Circuit MSOP, SOP, and DIP Package DS012607-2 Top View Order Number LM4864MM, LM4864M or LM4864N See NS Package Number MUA08A, M08A or N08E September 1999 © 1999 National Semiconductor Corporation DS012607 www.national.com |
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