B Use the specification sheet to determine its electrical characteristics and

B use the specification sheet to determine its

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B.Use the specification sheet to determine its electrical characteristics and operating values.a.Record the electrical values of the LM386. Absolute Maximum Ratings: Supply Voltage : 15V – 22V Package Dissipation : 1.25 Watt – 0.595 Watt Input Voltage : ±0.4V Electrical Characteristics: Operating supply voltage : 4V – 12 V ( Min = 4V , Max = 12V) Output power : 250 – 325 mW Voltage gain : 26dB Bandwidth : 300kHz Input Resistance : 50k Ω
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C.Using information from the data sheet or other sources and an application such as Multisim, Visio, or a CAD program draw the schematic and verify the component values of an audio amplifier application using the device.a.Using the Typical Applications section or other source find an amplifier with a gain equal to 20. b.Use an application such as Multisim, Visio, or a CAD program to create the circuit schematic. Label the schematic, LM386 Audio Amplifier. c.Label the pin numbers on the LM386 and give each component a name and value. d.Explain briefly how the gain of the LM386 can be changed. Verified Values Package Dissipation: 0.765Watt
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Ω D.Construct the audio amplifier on your breadboard with various gains (20 and 200). Using a frequency generator as an input, verify the amplification of the audio amplifier. Use 10mV peak as the input signal and keeping all the component connecting wired as short as possible. Alsokeep all the components close together on the breadboard. b.Complete the table below. R C 5 V in V out Expected Gain Measured Gain(dB)
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10mV 1.732 ? High 173.2 20 149.98 1.2k Ω 10µF 10mV 1.346 134.6 50 95.94 10µF 10mV 1.652 165.2 200 131.6 See gain control text in spec sheet for expected gains
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