| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a maximum value of output current to be set independently of other characteristics by an adjustment of a circuit constant with fewer additional elements than before and without increasing current consumption. <P>SOLUTION: An operational amplifier having a differential amplification circuit 101 for differentially amplifying input signals, a pre-driver circuit 103 for outputting a voltage-current conversion of an output of the differential amplification circuit 101, and an output stage 106 driven by the output of the pre-driver circuit 103 has an overcurrent protection circuit 104 capable of suppressing an increase in a base current of a pre-driver transistor 3 constituting the pre-driver circuit 103 to provide overcurrent protection of an output current (output source current). <P>COPYRIGHT: (C)2013,JPO&INPIT |
