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LM4871M Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4871M Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 8 page  LM4871 1.1W Audio Power Amplifier with Shutdown Mode General Description The LM4871 is a bridge-connected audio power amplifier ca- pable of delivering typically 1.1W of continuous average power to an 8 Ω load with 0.5% (THD) from a 5V power sup- ply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optionally suited for low-power portable sys- tems. The LM4871 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4871 can be configured by external gain-setting resistors. Key Specifications n THD at 1 kHz at 1W continuous average output power into 8 Ω 0.5% (max) n Output power at 10% THD+N at 1 kHz into 8 Ω 1.5W (typ) n Shutdown Current 0.6 µA (typ) Features n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Small Outline or DIP packaging n Unity-gain stable n External gain configuration capability n Pin compatible with LM4861 Applications n Portable Computers n Desktop Computers n Low Voltage Audio Systems Typical Application Connection Diagram Boomer® is a registered trademark of National Semiconductor Corporation. DS100008-1 FIGURE 1. Typical Audio Amplifier Application Circuit Small Outline and DIP Package DS100008-2 Top View Order Number LM4871M or LM4871N See NS Package Number M08A or N08E February 2000 © 2000 National Semiconductor Corporation DS100008 www.national.com |
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