3D Audio Sub-System With Stereo Speaker, OCL/SE Stereo Headphone, Earpiece And Mono Line Level Outputs

The LM4934 is an integrated Audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker Amplifier delivering 520mW per channel into an 8 load, a stereo Headphone Amplifier delivering 36mW per channel into a 32 load, a mono earpiece Amplifier delivering 55mW into a 32 load, and a line output for an external powered handsfree speaker. It integrates the Audio Amplifiers Volume Control mixer, Power Management control, and National 3D enhancement all into a single package. In addition, the LM4934 routes and mixes the stereo and mono inputs into multiple distinct output modes. The LM4934 features an I2S serial Interface for full range Audio and an I2C SPI compatible Interface for control.
Boomer Audio Power Amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.
By National Semiconductor Corporation
LM4934 's PackagesLM4934 's pdf datasheet

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LM4934 Application circuits
LM4934 circuits
This is one application circuit of LM4934,If you need more circuits,please download LM4934's pdf datasheet.

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