AUDIO AMP BOARD – LM386

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. Board can use wide rande of power supply, fom 3.3V to 5V.

20141115_144538

LM386 Sch

 

386A

386C

386B

386d

Parts


Part Quantity Value Package
IC1 1 LM386  SO08
C1,C2 1 100nF  0402
C3 1 50nF  0402
C4 1 220uF
C5 1 10uF
C6 1 470uF
R1 1 10R  0805
RX 1 RX  0805

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