Datasheet4U Logo Datasheet4U.com

LM4857 - Stereo 1.2W Audio Sub-system

Datasheet Summary

Description

The LM4857 is an integrated audio sub-system designed for stereo cell phone applications.

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 LM4857 is available in a 30-bump ITL package and a 28.
  • lead LLP package. Key Specifications j POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4857SP) j POUT, Stereo Loudspeakers, 8Ω, 5V, 1.6W (typ) 1.2W (typ) 75mW (typ) 100mW (typ) 495mW (typ) 33mW (typ) 43mW (typ) 0.06µA.

📥 Download Datasheet

Datasheet preview – LM4857

Datasheet Details

Part number LM4857
Manufacturer National Semiconductor
File Size 1.48 MB
Description Stereo 1.2W Audio Sub-system
Datasheet download datasheet LM4857 Datasheet
Additional preview pages of the LM4857 datasheet.

📁 Similar Datasheet

  • LM4857 - Stereo 1.2W Audio Sub-system (Texas Instruments)
  • LM48511 - Audio Power Amplifier (Texas Instruments)
  • LM48512 - Audio Power Amplifier (Texas Instruments)
  • LM48520 - Audio Power Amplifier (Texas Instruments)
  • LM4853 - Power Amplifier (Texas Instruments)
  • LM4855 - Integrated Audio Amplifier (Texas Instruments)
  • LM48556 - Ceramic Speaker Driver (Texas Instruments)
  • LM48557 - Ceramic Speaker Driver (Texas Instruments)
  • LM48560 - Ceramic Speaker Driver (Texas Instruments)
  • LM48580 - Haptic Piezo Actuator / Ceramic Speaker Driver (Texas Instruments)
Other Datasheets by National Semiconductor
  • LM4850 - Mono 1.5W / Stereo 300mW Power Amplifier
  • LM4851 - Integrated Audio Amplifier
  • LM48510 - boosted class D audio power amplifier
  • LM48511 - Class D Audio Power Amplifier
  • LM4852 - Integrated Audio Amplifier
  • LM48520 - Boosted Stereo Class D Audio Power Amplifier
  • LM4853 - Mono 1.5W / Stereo 300mW Power Amplifier
  • LM4854 - 1.9W Monaural / 85mW Stereo Headphone Audio Amplifier

Full PDF Text Transcription

Click to expand full text
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 LM4857 routes and mixes the stereo and mono inputs into 16 distinct output modes.
Published: |