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Lab Four – Audio AmplifiersByRobert LopezECT246 Electronic Systems III with LabProfessor Akin KuguogluDeVry University Online01/25/15
Part A: Audio AmpsTCO #4:Given an audio amplifier application that uses an integrated amplifier, examine theoverall 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 asa LM386 download the specification sheet and determine its 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 . Print the datasheet.b.From the data sheet find the following information and record.What are its general characteristics? or Features:Battery operationMinimum external partsWide supply voltage range: 4V–12V or 5V–18VLow quiescent current drain: 4mAVoltage gains from 20 to 200Ground referenced inputSelf-centering output quiescent voltageLow distortion: 0.2% (AV = 20, VS = 6V, RL = 8, PO =125mW, f = 1kHz)Available in 8 pin MSOP packageApplications:AM-FM radio amplifiersPortable tape player amplifiersIntercomsTV sound systemsLine driversUltrasonic driversSmall servo driversPower convertersPackage type:Small Outline,Molded Mini Small Outline,and Dual-In-Line PackagesPin configuration: