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Design an audio amplifier with gain of 10, using power supplies of VCC = ± 12 V, and choose an appropriate op amp for audio applications, such as the OP27. Use a SPICE simulation to determine the maximum in harmonic distortion, defined as PHD = Pharmonic − Pfundamental (in dB), for the cases of input with amplitude of 1.2 V at frequencies (a) 250 Hz (bass), (b) 1 kHz (mid-range), and (c) 4 kHz (treble).
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