描述 Description

The LM4809 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16? 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 LM4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The unity-gain stable LM4809 can be configured by external gain-setting resistors. The LM4809 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

特性 Features

? Active-Low Shutdown Mode
? \"Click and Pop\" Reduction Circuitry
? Low Shutdown Current
? WSON, MSOP, and SOIC Surface Mount Packaging
? No Bootstrap Capacitors Required
? Unity-Gain Stable
Key Specifications
? THD+N at 1kHz at 105mW Continuous Average Power into 16? 0.1% (typ)
? THD+N at 1kHz at 70mW Continuous Average Power into 32? 0.1% (typ)
? Shutdown Current 0.4μA (typ)