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LM4908MM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4908MM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 21 page LM4908 10kV ESD Rated, Dual 120 mW Headphone Amplifier General Description The LM4908 is a dual audio power amplifier capable of delivering 120mW 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 using surface mount packaging. Since the LM4908 does not require bootstrap capacitors or snub- ber networks, it is optimally suited for low-power portable systems. The unity-gain stable LM4908 can be configured by external gain-setting resistors. Key Specifications j THD+N at 1kHz at 120mW continuous average output power into 16 Ω 0.1% (typ) j THD+N at 1kHz at 75mW continuous average output power into 32 Ω 0.1% (typ) j Output power at 0.1% THD+N at 1kHz into 32 Ω 75mW (typ) Features n Up to 10kV ESD protection on all pins n MSOP, SOP, and LLP surface mount packaging n Switch on/off click suppression n Excellent power supply ripple rejection n Unity-gain stable n Minimum external components Applications n Headphone Amplifier n Personal Computers n Portable electronic devices Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. 20075201 *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 February 2004 © 2004 National Semiconductor Corporation DS200752 www.national.com |
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