In order to make the IC better with its response, its pin#1 and 8 have been attributed with a gain control facility which may be set externally. Internal Schematic How to Control Gain for the IC LM386 IC manufactured by: National Semiconductor.Operating Temperature: 0 to 70 degrees Celsius.Storage Temperature: -65 degrees to +150degrees Celsius.Let's begin the IC LM386 amplifier explanation by studying its absolute maximum ratings first, meaning the parameters which should not be exceeded while using this IC in any circuit: Technical Specifications of IC LM386 IC LM386 amplifier circuit becomes suitable for applying in small low power audio gadgets like in FM radios, door bells, telephones etc.
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