| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an amplification circuit capable of efficiently operating a plurality of amplifiers, while connecting them in parallel. Ž<P>SOLUTION: The amplifiers AR, AL of the same configuration are configured to connect corresponding internal nodes (e.g., internal nodes pg, ng to which the gate of a transistor on an output stage is connected) via switches (S2, S3). When operating the amplifiers AR, AL in a stereo mode, the switches S2, S3 are set to OFF. When operating the amplifiers in a monaural mode, the switches S2, S3 are set to ON, a monaural audio signal A is inputted by connecting two input terminals INR, INL; and a monaural audio output signal is extracted by connecting two output terminals OUTR, OUTL. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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