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LM4859 - Stereo 1.2W Audio Sub-system

Description

The LM4859 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 and a stereo headphone amplifier delivering 33mW per channel into a 32Ω load.

Features

  • include an ultra-low current shutdown mode and thermal shutdown protection. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. The LM4859 is available in a 28.
  • lead LLP package. Key Specifications j POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4859SP) j POUT, Stereo Loudspeakers, 8Ω, 5V, 1.6W (typ) 1.2W (typ) 75mW (typ) 495mW (typ) 33mW (typ) 0.06µA (typ) 1% THD+N j POUT, Stereo Headphones, 32Ω,.

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Datasheet preview – LM4859

Datasheet Details

Part number LM4859
Manufacturer National Semiconductor
File Size 1.18 MB
Description Stereo 1.2W Audio Sub-system
Datasheet download datasheet LM4859 Datasheet
Additional preview pages of the LM4859 datasheet.

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Full PDF Text Transcription

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LM4859 Stereo 1.2W Audio Sub-system with 3D Enhancement November 2004 LM4859 Stereo 1.2W Audio Sub-system with 3D Enhancement General Description The LM4859 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 and a stereo headphone amplifier delivering 33mW per channel into a 32Ω load. It integrates the audio amplifiers, volume control, mixer, power management control, and National 3D enhancement all into a single package. In addition, the LM4859 routes and mixes the stereo and mono inputs into 10 distinct output modes. The LM4859 is controlled through an I2C compatible interface.
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