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LM386概述
    The LM386 is a power amplifier, designed for use in low voltage consumer applications. 
    The gain is internally set to 20 keep the external part count low, but the additional of external resistor and capacitor between pin 1 and pin 8 will increase the gain to any value up to 200.

LM386特性
Minimum external parts
Wide supply voltage range: 4V~12V
Voltage gains:20~200
Ground referenced input 
Low distortion

LM386典型應(yīng)用電路



LM386引腳配置

LM386功能框圖