LM4809 - LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode

The LM4809 is a dual audio power amplifier capable of delivering 105mW 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. 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.

Products containing the "LM4809" keyword are: LM4809 , LM4809LD , LM4809LD/NOPB , LM4809LDBD , LM4809LDX , LM4809LDX , SMDJ18A , LM4809LDX/NOPB , LM4809LDX/NOPB , LM4809LDX/S7002110 , LM4809LQ , LM4809LQ+ , LM4809LQ/NOPB , LM4809LQBD , LM4809LQBD , LM4809LQDX , LM4809LQX , LM4809LQX , AP3710MTR-E1 , LM4809LQX NOPB , LM4809LQX+ , LM4809LQX/GB3

• 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 16Ω 0.1% (typ)
• THD+N at 1kHz at 70mW Continuous Average Power into 32Ω 0.1% (typ)
• Shutdown Current 0.4µA (typ)

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