Features • Very high voltage operation • Scalable output power • Minimum external components • External compensation • Thermal Shutdown and Mute Description The LM4702 is a high fidelity audio power amplifier driver 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 LM4702 is capable of delivering in excess of 300 watts per channel single ended into an 8 ohm load in the presence of 10% high line headroom and 20% supply regulation. The LM4702 includes thermal shut down circuitry that activates when the die temperature exceeds 150°C. The LM4702's mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. The LM4702 is available in 3 grades that span a wide range of applications and performance levels. The LM4702C is targeted at high volume applications. The LM4702B includes a higher voltage rating along with the tighter specifications. The LM4702A* (in development) is the premium part with the highest voltage rating, fully specified with limits over voltage and temperature, and is offered in a military 883 compliant TO-3 package. * Tentative Max Operating voltage for the LM4702A (in development) Key Specification Wide operating voltage range   LM4702A* (in development) ±20V to ±100V LM4702B ±20V to ±100V LM4702C ±20V to ±75V Equivalent Noise 3µV PSRR 110dB (typ) THD+N (A and B Grades) 0.0003% Applications • AV receivers • Audiophile power amps • Pro Audio • High voltage industrial applications

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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
	LM4702 Audio Power Amplifier Series Stereo High Fidelity 200 Volt Driver with Mute	891 Kbytes	20-Sep-06

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)
LM4702BTA	VIP III H/HU2	0	2366	0	0	702554	6	199351615
LM4702CTA	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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