LM4840LQX

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LM4840LQX Features

• PC98 and PC99 Compliant
• Digital Volume Control Interface
• System Beep Detect
• Stereo switchable bridged/single-ended power amplifiers
• "Click and pop" suppression circuitry
• Thermal shutdown protection circuitry
• Input Mux
• Capless headphone drivers
• Last volume memory from shutdown

LM4840LQX Description

The LM4840 is a monolithic integrated circuit that provides digital volume control and stereo bridged audio power amplifiers capable of producing 2W into 4 with less than 1.0% THD or 2.2W into 3 with less than 1.0% THD.

BoomerŪ audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4840 incorporates a digital volume control, stereo bridged audio power amplifiers, an input mux, and a last volume level memory function to save the volume setting during shutdown. These features make it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4840 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

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