| 摘要 |
<P>PROBLEM TO BE SOLVED: To concurrently achieve suppression of power consumption of an amplifier and high through rate thereof, regardless of power supply potentials of an input stage and an output stage. <P>SOLUTION: An amplifier includes a voltage follower circuit that has a differential input terminal and an output terminal, allows the output terminal to be fed back to one side of the differential input terminal, amplifies an input signal input to the other side of the differential input terminal and outputs the amplified signal from the output terminal; a first current source that supplies a predetermined current to the voltage follower circuit; and a second current source that supplies a current to the voltage follower circuit when a potential difference between the other side of the differential input terminal and the output terminal is not less than a predetermined value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
