From Makers Electronics's description
LM386 Wide Input Voltage Low Power Audio Amplifier DIP-8 The LM386 is a low voltage, low power audio amplifier designed for use in consumer-grade electronics. Packaged in a compact 8-pin DIP form, it operates with a wide input voltage range from 4V to 12V or up to 15V, making it highly versatile for battery-powered applications. The LM386 can deliver output power up to 325mW into an 8-ohm speaker with minimal external components, making it ideal for simple audio amplification tasks. It features a voltage gain internally set to 20, but this can be increased up to 200 using external resistors and capacitors. With low quiescent current consumption and minimal external component requirements, the LM386 is a cost-effective solution for audio applications like radios, intercoms, toys, and portable audio devices. Features: Wide supply voltage range: Operates from 4V to 12V or up to 15V. Low power consumption: Ideal for battery-powered devices. Output power: Up to 325mW into 8Ω at 6V supply. Adjustable voltage gain: Internally fixed at 20, can be increased up to 200 with external components. Low quiescent current draw: Only 4mA, enhancing energy efficiency. Few external components required: Simplifies circuit design. Minimum external parts for basic operation. Low distortion audio output. Built-in gain control and bypass capacitor options. Compact 8-pin DIP package for easy through-hole mounting. Ideal for driving small speakers in portable audio devices. Thermal overload protection for enhanced reliability. Pin Configuration: 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 Analog input voltage 0.4V (maximum) Voltage Gain: 20 to 200 (26dB to 46dB) PSRR: 50dB Speaker impedance 4Ω Available in 8-Pin PDIP package More technical details and LM386 specifications can be found in the LM386 datasheet attached at the bottom of the article. Where to use the LM386 Audio Amplifier The LM386 is a low power audio frequency amplifier which is very commonly used in small audio amplifiers. The IC consumes very less power and hence can be operated using a 9V battery easily. It can easily drive an 8-ohm speaker with a variable gain of 20 to200. Volume control and gain control is also possible in this. The IC comes in a 8-pin PDIP package and requires very less components to function hence it is highly easy to use. So, if you are looking for an audio amplifier IC which can be powered using a battery for a portable application to drive an 8-ohm speaker then this IC might be the right choice for you. For driving heavy speakers you have to use the power amplifier ICs. How to use LM386 IC The LM386 only requires a couple of capacitors and resistors to start working. A very basic commonly used LM386 circuit is shown below. The IC is powered using the pin 6 (typically 5 or 9V) and the ground pin 4 is connected to the ground. The inverting pin (pin 2) is normally grounded and the Non-inverting pin (pin 3) is provided with the Audio signal. This audio signal can be from a microphone or even from a 3.5mm jack. The 10k resistor is added in series with the audio signal to act as a volume control. You can ignore this potentiometer if you want to operate in full volume. The pin 1 and pin 8 are used to set the gain of the Amplifier. If there is nothing connected between these pins then the default gain will be 26 dB, but we can connect a 10 µF capacitor across it to get the maximum in of the IC which is 46dB. The pin 7 is used to connect a filtering capacitor (0.1uf) for our amplifier IC to avoid unnecessary oscillations. The amplified audio signal can be obtained from the pin 5 which is connected to a 8-ohm speaker through a filtering capacitor. The RC network with 0.05uF and 10k resistor is optional. Applications AM and FM Radio amplifiers. Portable music players. Low Power Audio amplifiers. Power Amplifiers. Audio boosters. Datasheet: LM386 Datasheet
Read moreShow less
ULN2003AG Seven Darlington Array 50V 500mA DIP-16EGP 61 shopchecked 18 days ago
LM358DR SMD Dual Operational Amplifiers SOIC-8EGP 61 shopchecked 21 days ago
LM358 Dual Operational Amplifier DIP-8EGP 61 shopchecked 20 days ago
NE555N General Purpose Single Timers,18V, 5MA, 8-Pin PDIPEGP 61 shopchecked 15 days ago
LM358 Dual Op Amp ICEGP 6 – 114 shopschecked 17 days ago
