The LM386N is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 tokeep external part count low, but the addition of an externalresistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. The inputs are ground referenced while the output automati-cally biases to one-half the supply voltage. The quiescent power drain is only 24 milliwatts when operating from a 6 voltsupply, making the LM386N ideal for battery operation.
LM386N Features
Minimum external parts Low quiescent current drain of 4mA Self centring output quiescent voltage Wide supply voltage range from 4V to 12V Output power is 325mW at VS=6V and RL=8W Voltage gain is 26db at VS=6V and f=1KHz Bandwidth (BW) of 300KHz Power supply rejection ratio (PSRR) is 50dB Low distortion of 0.2% Operating temperature range 0°C to 70°C
LM386N Applications
TV sound systems Line drivers Intercoms Ultrasonic drivers Small servo drivers Power converters AM-FM radio amplifiers Portable tape player amplifiers
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