| 摘要 |
PROBLEM TO BE SOLVED: To provide the power amplifier circuit of high bias stability and high linearity capable of low voltage drive. SOLUTION: This circuit is provided with a differential amplifier circuit 10 for amplifying + side input signals, - side input signals and differential voltage signals, an amplifier circuit 12 for amplifying the output signals of the differential amplifier circuit, an output circuit 16 composed of complementarily connected first PMOS transistor and first NMOS transistor and formed by connecting the connection point of the PMOS transistor and the NMOS transistor to a load and a current boosting circuit 14 for supplying a current for which the output signal current of the amplifier circuit is multiplied to a prescribed multiplying power through the output circuit to the load.
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