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LM4811MM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4811MM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 18 page  LM4811 Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode General Description The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16 Ω load with 0.1% (THD+N) from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4811 features a digital volume control that sets the amplifier’s gain from +12dB to −33dB in 16 discrete steps using a two−wire interface. The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism. Key Specifications n THD+N at 1kHz, 105mW continuous average output power into 16 Ω 0.1% (typ) n THD+N at 1kHz, 70mW continuous average power into 32 Ω 0.1% (typ) n Shutdown Current 0.3µA (typ) Features n Digital volume control range from +12dB to −33dB n LD and MSOP surface mount packaging n "Click and Pop" suppression circuitry n No bootstrap capacitors required n Low shutdown current Applications n Cellular Phones n MP3, CD, DVD players n PDA’s n Portable electronics Connection Diagrams MSOP Package 20006102 Top View Order Number LM4811MM See NS Package Number MUB10A LD Package 20006162 Top View Order Number LM4811LD See NS Package Number LDA10A Boomer® is a registered trademark of National Semiconductor Corporation. December 2002 © 2002 National Semiconductor Corporation DS200061 www.national.com |
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