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LM4702C bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM4702C bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
1 / 15 page LM4702 Overture® Audio Power Amplifier Series Stereo High Fidelity 200 Volt* Driver with Mute General Description The LM4702 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applica- tions. 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 acti- vates 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 (in de- velopment) 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, LM4702B (in development) Key Specifications j Wide operating voltage range LM4702A (in development) ±20V to ±85V LM4702B (in development) ±20V to ±80V LM4702C ±20V to ±75V j Equivalent Noise 3µV j PSRR 110dB (typ) j THD 0.001% Features n Very high voltage operation n Scalable output power n Minimum external components n External compensation n Thermal Shutdown and Mute Applications n AV receivers n Audiophile power amps n Pro Audio n High voltage industrial applications Typical Application and Connection Diagrams 20158319 FIGURE 1. Typical Audio Amplifier Application Circuit 20158302 Plastic Package — 15 Lead TO-220 (for LM4702; LM4702B, in development) 20158320 Metal Can — 15 Lead TO-3 (for LM4702A, in development) SPiKe™ Protection and Overture™ are trademarks of National Semiconductor Corporation. September 2005 © 2005 National Semiconductor Corporation DS201583 www.national.com |
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Mô tả tương tự - LM4702C |
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