LM386低电压音频功率放大器的工作原理与典型应用

LM386芯片资料

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(英文描述:The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 milliwatts when operating from a 6 volt supply, making the LM386 ideal for battery operation.)特性(Features): * 静态功耗低，约为4mA,可用于电池供电。 典型应用电路图LM386应用电路图之增益=200LM386应用电路图之增益=50LM386应用电路图之低频提升放大器