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| AN12942B Datasheet, PDF (1/31 Pages) Panasonic Semiconductor – Audio signal processing IC for notebook PC | |||
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ICs for Audio Common Use
AN12942B
Audio signal processing IC for notebook PC
 Overview
AN12942B is an one-chip IC for the stereo speakers which can output 1 W by 8 â¦, headphone amplifiers, line amplifiers, and
electronic volumes.
The AGC circuit is built-in to prevent the resonance or the vibration by the speakerâs energy and the clipping distortion what is
called "broken up sound".
Also the AN12942B is built-in power saving on/off function automatically detecting input signal to save the power of speaker
amplifier.
 Features
⢠Speaker amplifier
1 W à 2-channel: 8 â¦, VCC = 5 V
⢠Built-in AGC circuit
Prevention of the resonance or the vibration due to the speaker and the clipping distortion by AGC at excessive input signal
(with AGC on/off switch).
⢠Built-in automatic power saving function.
It detects input signals and switches on/off (with the on/off switch for the auto power saving).
⢠Built-in headphone amplifier and line amplifier
 Applications
⢠Notebook PC
 Package
⢠Dual surface implementing package (HSOP056-P-0300A)
 Type
⢠Silicon monolithic bipolar IC
Publication date: June 2003
SDC00047AEB
1
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