Power_op_amp_audio_amplifier

Published:2009/7/24 23:34:00 Author:Jessie | From:SeekIC

This amplifier uses a single LM12 (Fig. 10-46) with dual supplies. Figure 10-55B shows the total harmonic distortion or THD (Fig. 1-E) for both low-and high-level outputs. Typical intermodulation distortion (Fig. 1-F) is 0.015% with ±10 V into a 4-Ω load, using the standard 60-Hz/7-kHz 4:1 test conditions. Figure 10-55C shows the offset-voltage change after the application of a load that dissipates 50 W in each output transistor.



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