LM386 Pinout Configuration Pin Number Pin Name Description 1,8 GAIN Used to set the gain of the IC by connecting to a Capacitor 2 Inverting Input (IN-) The Inverting Pin of amplifier is normally grounded 3 Non-Inverting Input (IN+) The Non-Inverting pin is provided with the audio signal 4 Ground The ground pin is connected to the ground of the system 5 Vout Provides amplified audio output, connected to speaker 6 Vss/Vcc Connected to power 7 Bypass Bypass pin is used for connecting a decoupling capacitor LM386 Audio amplifier features and specifications • Supply Voltage: 4-15V • Quiescent Power: 24mW @ 6V