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LM4857

National Semiconductor
Part Number LM4857
Manufacturer National Semiconductor
Description Stereo 1.2W Audio Sub-system
Published Mar 22, 2005
Detailed Description LM4857 Stereo 1.2W Audio Sub-system with 3D Enhancement June 2004 LM4857 Stereo 1.2W Audio Sub-system with 3D Enhancem...
Datasheet PDF File LM4857 PDF File

LM4857
LM4857

Overview
LM4857 Stereo 1.
2W Audio Sub-system with 3D Enhancement June 2004 LM4857 Stereo 1.
2W Audio Sub-system with 3D Enhancement General Description The LM4857 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 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifier delivering 43mW into a 32Ω 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 LM...


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