Features • Very high voltage operation • Scalable output power • Minimum external components • External compensation • Thermal Shutdown Description The LME49811 is a high fidelity audio power amplifier input stage designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of output devices. The LME49811 is capable of driving an output stage to deliver in excess of 500 watts single-ended into an 8 ohm load in the presence of 10% high line headroom and 20% supply regulation. The LME49811 includes thermal shut down circuitry that activates when the die temperature exceeds 150°C. The LME49811's shutdown function when activated, forces the LME49811 into shutdown state. Key Specification ■  Wide operating voltage range ±20V to ±100V ■  PSRR (f = DC) 115dB (typ) ■  THD+N (f = 1kHz) 0.00035% (typ) ■  Output Drive Current 9mA Applications • Powered subwoofers • Pro audio • Powered studio monitors • Audio video receivers • Guitar Amplifiers • High voltage industrial applications

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

Datasheet

Title		Size	Date	Other Language
	LME49811 Audio Power Amplifier Series High Fidelity 200 Volt Power Amplifier Input Stage with Shutdown	662 Kbytes	11-Nov-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1849: Application Note 1849 An Audio Amplifier Power Supply Design	1495 Kbytes	3-Jun-08

More Application Notes

Title		Size	Date	Other Language
	AN-1849: Application Note 1849 An Audio Amplifier Power Supply Design	1495 Kbytes	3-Jun-08

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LME49811TB	VIP III H/HU2	0	2366	0	0	702554	6	199351615

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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