ET- LM386 Description The MIK386 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 capasitor 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 MIK386 ideal for battery operation. Features Applications • • • • • • • • • • • • • • • • Battery operation Minimun external parts Wide supply voltage range 4V to 12V Low quiescent current drain 4mA (Typ) Voltage gains: 20 - 200 Ground referenced input Self-centering output quiescent voltage Low distortion AM-FM radio amplifiers Portable tape player amplifiers Intercoms TV sound systems Line drivers Ultrasonic drivers Small servo drivers Power converters Typical Applications Pin connection Amplifier with Gain=50 (34dB) Vcc 1.2K + 6 2 VI - 3 250µF + 8 MIK386 10K 10µF 1 5 7 + + 4 BYPASS 10 RL 0.05µF Absolute Maximum Ratings Symbol VCC PD VIN TJ TOPR TSTG Parameter Supply voltage Power dissipation Input voltage Junction temperature Operating temperature Storage temperature Maximum 15 660 ±0.4 +150 -20 ... +70 -40 ...+125 Units V mW V °C °C °C Electrical Characteristics (TA=25°C, VCC=6V, RL=8Ω, f=1KHz, unless otherwise specified) Parameter Quiescent Current Output Power Symbol ICCQ POUT Voltage Gain AV Bandwidth BW Total Harmonic Distortion Power Supply Rejection Ratio Input Resistance Input Bias Current THD PSRR RIN IBIAS Conditions VIN=0 VCC=6V, THD=10% VCC=9V, THD=10% Pins 1 and 8 Open 10 µF from Pin 1 to 8 Pins 1 and 8 Open 10 µF from Pin 1 to 8 POUT=125mW, Pins 1 and 8 Open Cbypass=10 µF, Pins 1 and 8 Open, Referred to output Pins 1 and 8 Open Page 1 of 1 Min 250 500 Typ 4 325 700 26 46 300 60 0.2 50 50 250 Max 8 Units mA mW dB KHz % dB kΩ nA BEIJING ESTEK ELECTRONICS CO.,LTD