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Audio Power Amplifier with Built-in AGC AN12972A

Overview: Audio Power Amplifier with Built-in AGC AN12972A  Increasing volume settings when using small speakers  results in distortion as the output signal distorts at high  gain settings. The AN12972A audio power amplifier  features built-in automatic gain control (AGC) circuitry to minimize distortion by decreasing too high an input gain level. Using a low-noise amp minimizes noise even  when the speaker is placed close to an ear.
Features:
Built-in AGC circuitry if an input level is too high, the AGC is activated to minimize distortion, raising the  overall volume level and reducing noise.Low noise amplifier.Input circuit format accommodates different input signals (mixing possible)Standby and speaker mute functions.Small package.Cellular phones, PDAs and other mobile equipment

Circuit Diagram:

Audio Power Amplifier with Built-in AGC AN12972A

Overview:
Audio Power Amplifier with Built-in AGC AN12972A  Increasing volume settings when using small speakers  results in distortion as the output signal distorts at high  gain settings. The AN12972A audio power amplifier  features built-in automatic gain control (AGC) circuitry  to minimize distortion by decreasing too high an input  gain level. Using a low-noise amp minimizes noise even  when the speaker is placed close to an ear.
Features: Built-in AGC circuitry if an input level is too high, the  AGC is activated to minimize distortion, raising the  overall volume level and reducing noise.Low noise amplifier.Input circuit format accommodates different input signals (mixing possible)Standby and speaker mute functions.Small package.Cellular phones, PDAs and other mobile equipmentCircuit Diagram: