10 Watt Stereo Class D Audio Power Amplifier With Stereo Headphone Amplifier And I2c/spi Volume Control - National Semiconductor

The LM4681 is a fully integrated single supply, CLASS D Audio Power Amplifier solution. The LM4681 utilizes a pro- prietary balanced pulse-width modulation technique that low- ers output noise and THD and improves PSRR when com- pared to conventional pulse width Modulators The LM4681 also features a stereo Headphone Amplifier that delivers 80mW into a 32 headset with less than 0.5% THD. The LM4681s I 2 C/SPI (selectable) Volume Control has a +30dB to 48dB range when speakers are driven and a range of +13dB to 65dB when Headphones are connected. All Amplifiers are protected by thermal shutdown. Addition- ally, the high efficiency power Amplifiers have output current limit. With a 8 load, the ICs efficiency for a 6W power level is 85%. The IC features click and pop reduction circuitry that minimizes audible popping during device turn-on and turn- off. The LM4681 is available in a 48-lead LLP package, ideal for portable and desktop computer applications. By National Semiconductor Corporation
LM4681 's PackagesLM4681 's pdf datasheet



LM4681 Pinout, Pinouts
LM4681 pinout,Pin out
This is one package pinout of LM4681,If you need more pinouts please download LM4681's pdf datasheet.

LM4681 Application circuits
LM4681 circuits
This is one application circuit of LM4681,If you need more circuits,please download LM4681's pdf datasheet.


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