LM 386

Description

The LM386 is a low voltage audio power amplifier designed for use in 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 input common-mode range includes ground, and the amplifier is ideal for battery operation.

Key Features:

Power Supply Range: 4V to 12V, or 5V to 18V
Low Quiescent Current: 4mA (typical)
Voltage Gain: Internally fixed at 20 (adjustable to 200)
Output Power: 700mW into an 8Ω load with a 9V supply
Wide Supply Voltage Range: 4V to 12V or 5V to 18V
Low Distortion: 0.2% THD (typical)
Low External Component Count: Requires only a few external components
High Gain: Adjustable from 20 to 200
Low Power Consumption: Suitable for battery operation
Technical Specifications:

Supply Voltage Range: 4V to 12V, or 5V to 18V
Quiescent Current: 4mA (typical)
Output Power: 700mW into an 8Ω load with a 9V supply
Voltage Gain: 20 to 200 (adjustable with external components)
Bandwidth: 300kHz
Input Bias Current: 250nA (typical)
Input Resistance: 50kΩ (typical)
Operating Temperature Range: 0°C to +70°C
Package: 8-pin PDIP (Plastic Dual In-line Package) or SOIC (Small Outline Integrated Circuit)
Applications:

Portable Audio Systems: Ideal for battery-operated audio applications.
Radio and TV Sound Systems: Suitable for use in audio output stages of radios and TVs.
Intercoms: Used in intercom and communication devices for sound amplification.
Ultrasonic Drivers: Can be used in ultrasonic transducer driver circuits.
Line Drivers: Suitable for use as a line driver in various audio applications.
Small Signal Amplification: Useful in various circuits requiring small signal amplification