Features • Digital volume control range from +12dB to -33dB • LD and MSOP surface mount packaging • "Click and Pop" suppression circuitry • No bootstrap capacitors required • Low shutdown current Description The LM4811 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 LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4811 features a digital volume control that sets the amplifier's gain from +12dB to -33dB in 16 discrete steps using a two-wire interface. The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism. Key Specification THD+N at 1kHz, 105mW continuous average output power into 16 0.1% (typ) THD+N at 1kHz, 70mW continuous average power into 32 0.1% (typ) Shutdown Current 0.3µA (typ) Applications • Cellular Phones • MP3, CD, DVD players • PDA's • Portable electronics

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Typical Application click for larger image	Connection Diagram click for larger image
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Datasheet

Title		Size	Date	Other Language
	LM4811 Boomer ® Audio Power Amplifier Series Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode	1148 Kbytes	6-Apr-06	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1645: Application Note 1645 LM4702 Driving a MOSFET Output Stage	655 Kbytes	24-May-07	中文
	AN-1490: Application Note 1490 LM4702 Power Amplifier	1033 Kbytes	26-May-06	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1645: Application Note 1645 LM4702 Driving a MOSFET Output Stage	655 Kbytes	24-May-07	中文
	AN-1490: Application Note 1490 LM4702 Power Amplifier	1033 Kbytes	26-May-06	中文

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM4811LD	CS065	2	38968	52	0	4402000	1	1249079519
LM4811LDX	CS065	2	38968	52	0	4402000	1	1249079519
LM4811MM	CS065	2	38968	52	0	4402000	1	1249079519
LM4811MMX	CS065	2	38968	52	0	4402000	1	1249079519

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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