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LM4880M Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4880M Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 12 page  LM4880 Dual 250 mW Audio Power Amplifier with Shutdown Mode General Description The LM4880 is a dual audio power amplifier capable of deliv- ering typically 250 mW per channel of continuous average power to an 8 Ω load with 0.1% (THD) using 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 using surface mount packaging. Since the LM4880 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power por- table systems. The LM4880 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4880 can be configured by external gain-setting resistors. Key Specifications n THD at 1 kHz at 200 mW continuous average output power into 8 Ω: 0.1% (max) n THD at 1 kHz at 85 mW continuous average output power into 32 Ω: 0.1% (typ) n Output power at 10% THD+Nat1kHz into 8 Ω: 325 mW (typ) n Shutdown Current: 0.7 µA (typ) Features n No bootstrap capacitors or snubber circuits are necessary n Small Outline (SO) and DIP packaging n Unity-gain stable n External gain configuration capability Applications n Headphone Amplifier n Personal Computers n CD-ROM Players Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. DS012343-1 *Refer to the Application Information section for information concerning proper selection of the input and output coupling capacitors. FIGURE 1. Typical Audio Amplifier Application Circuit November 1995 © 1999 National Semiconductor Corporation DS012343 www.national.com |
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