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
- Eight pin dual-in-line package
- AM-FM radio amplifiers
- Portable tape player amplifiers
- Intercoms
- TV sound systems
- Line drivers
- Ultrasonic drivers
- Small servo drivers
- Power converters
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