| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a photo-amplifier circuit in which power supply voltage rejection is reinforced. <P>SOLUTION: A symmetrical photo-amplifier circuit 100 with improved power supply voltage rejection includes a signal circuit 170 and a reference circuit 175, in which the electrical capacitances and parasitic capacitances from mechanical sources, such as bond wires and substrates, are matched between the signal circuit 170 and the reference circuit 175. With this circuit, a common-mode component of a noise signal superimposed on a feeder can be removed by a perfect differential amplifier. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
