Features • High output current and voltage for use with MOSFET output stages • Very high voltage range: ±20V - ±100V • Scalable output power • Minimum external components • External compensation • Thermal shutdown of input stage • Mute control Description The LME49830 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 LME49830 is capable of driving an output stage in excess of 300 W single-ended into an 8Ω load in the presence of 10% high line headroom and 20% supply regulation. The LME49830 includes internal thermal shut down circuitry that activates when the LME49830 die temperature exceeds 150°C. The LME49830 has a mute function that mutes the input drive signal and forces the amplifier output to a quiescent state. The LME49830 has high drive current, 56mA typical, and high output voltage swing for maximum flexibility in output stage choice. With a bias voltage range up to 16V the LME49830 can be used to drive MOSFET output stages using a wide selection of MOSFETs. The LME49830 has a wide operating supply range of ±20V to ±100V, which allows lower cost, unregulated power supplies to be used. Key Specification ■  Wide operating Voltage range ±20V to ±100V ■  Output Voltage Noise   (BW = 30kHz) 44μV (typ) ■  PSRR (DC) 105dB (typ) ■  Slew Rate 39V/μs (typ) ■  THD+N (f = 1kHz) 0.0006% (typ) Applications • AV receivers • Audiophile power amps • Pro Audio • High voltage industrial applications

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Datasheet

Title		Size	Date	Other Language
	LME49830 Mono High Fidelity 200 Volt MOSFET Power Amplifier Input Stage with Mute	516 Kbytes	24-Jan-08

Featured Application Notes

Title		Size	Date	Other Language
	AN-1850: Application Note 1850 LME49830TB Ultra-High Fidelity High Power Amplifier Reference Design	817 Kbytes	2-Dec-08	中文
	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)
LME49830TB	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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