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Lab Four – Audio AmplifiersByJordan MatiECT246 Electronic Systems III withLabA. KhanDeVry University Online1/30/15
Part A: Audio AmpsTCO #4:Given an audio amplifier application that uses an integrated amplifier, examine the overall amplifier’s performance and verify the operation by using suitable input and output circuits.Investigation of the LM386 Audio Amplifier takes place during week 4. The LM386 is a versatile special purpose op-amp used to amplifier audio frequencies. The device is contained in a single 8-pin dip package and has a gain of up to 200 and a power output of 1-watt.A.Use an Internet search utility, such as Google, find an audio amplifier such as a LM386 download the specification sheet and determineits general characteristics such as its general description, the package type and pin configuration.a.Use the Internet to search for a LM386 data sheet. Try or . Print the datasheet.b.From the data sheet find the following information and record.What are its general characteristics?
Pin configurationRefer to top image.B.Use the specification sheet to determine its electrical characteristicsand operating values.a.Record the electrical values of the LM386. Absolute Maximum Ratings:Supply Voltage >15VPackage Dissipation 1.25WInput Voltage + or - 0.4VElectrical Characteristics:Operating supply voltage - .4V - 12VOutput power - 250mw - 325mWVoltage gain – 6v and f=1khz > 25dBBandwidth - 300khz