LM4809LQBD Datasheet | Texas Instruments

LM4809, LM4809LQBD .ti. SNAS126F - FEBRUARY 2001 - REVISED APRIL 2013 LM4809 Dual 105m W Headphone Amplifier with Active Low Shutdown Mode Check for Samples: LM4809, LM4809LQBD Features - 2 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 APPLICATIONS - Headphone Amplifier - Personal puters - Microphone Preamplifier - PDA's KEY SPECIFICATIONS - THD+N at 1k Hz at 105m W Continuous Average Power into 16Ω 0.1% (typ) - THD+N at 1k Hz at 70m W Continuous Average Power into 32Ω 0.1% (typ) - Shutdown Current 0.4µA (typ) DESCRIPTION The LM4809 is a dual audio power amplifier capable of delivering 105m W 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 ponents. 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, activelow, micropower consumption shutdown mode, as well as an internal thermal shutdown protection...