LM4908

February 2004 www.DataSheet4U.com 10kV ESD Rated, Dual 120 mW Headphone Amplifier 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 16Ω 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 snubber networks, it is optimally suited for low-power portable systems. The unity-gain stable LM4908 can be configured by external gain-setting resistors. j Output power at 0.1% THD+N at 1kHz into 32Ω 75mW (typ) Features n n n n n n Up to 10kV ESD protection on all pins MSOP, SOP, and LLP surface mount packaging Switch on/off click suppression Excellent power supply ripple rejection Unity-gain stable Minimum external components Key Specifications j THD+N at 1kHz at 120mW continuous average output power into 16Ω j THD+N at 1kHz at 75mW Applications n Headphone Amplifier n Personal Computers n Portable electronic devices 0.1% (typ) continuous average output power into 32Ω 0.1% (typ) Typical Application 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 Boomer ® is a registered ...