LM386 - Low Voltage Audio Power Amplifier
General Description
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 up to 200. The inputs are ground referenced while the output is automatically
biased to one half the supply voltage. The quiescent power drain is only 24 milliwatts when operating from a
6 volt supply, making the LM386 ideal for battery operation.
Features
Battery operation
Minimum external parts
Wide supply voltage range: 4V–12V or 5V–18V
Low quiescent current drain: 4 mA
Voltage gains from 20 to 200
Ground referenced input
Self-centering output quiescent voltage
Low distortion
Available in 8 pin MSOP package
Applications
AM-FM radio amplifiers
Portable tape player amplifiers
Intercoms
TV sound systems
Line drivers
Ultrasonic drivers
Small servo drivers
Power converters
Комментарии