1W 2W Audio power IC for notebook PC

General Description:

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:

1W 2W Audio power IC for notebook PC