Overview:
The AN12941A is an amplifier IC for stereo speakers which can output 1 W by 8 Ω or 2 W by 4 Ω. The AGC circuit is built-in to prevent the resonance or the vibration by the speaker's energy and the clipping distortion what is called "broken up sound." of the speakers. Also, to reduce power consumption, AN12941A has a built-in function which automatically detects the input signal and can automatically enter power save mode when there is no signal.
Features:
- Speaker amplifier is
- 1 W × 2-channel: 8 Ω, VCC = 5 V or
- 2 W × 2-channel: 4 Ω, VCC = 5 V
- Built-in AGC circuit
- Prevention of the resonance or the vibration by
- the speaker's energy and the clipping distortion
- of the speaker 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 automatic power saving).
- Operating supply voltage: VCC 3.0 V to 5.5 V/
- VCC_SP 3.0 V to 5.5 V
Circuit Diagram:
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| Audio power IC for mp3 Player |
