| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oscillation circuit capable of reducing a capacitor that occupies a large area. <P>SOLUTION: An oscillation circuit includes: a crystal oscillator 11; an oscillation amplifier 12 connected in parallel to the crystal oscillator; and a coupling capacitor 15 to perform level shift to a predetermined voltage level, which is included in an oscillation part configured to connect a load capacitor 14 for stabilizing oscillation between an input side of the oscillation amplifier 12 and a ground potential. One end of the coupling capacitor 15 is connected to an output side of the oscillation amplifier 12. The oscillation circuit is configured to output a signal from the other end side of the coupling capacitor 15. The coupling capacitor 15 exhibits both functions of the load capacitor of the oscillation part and the coupling capacitor to perform the level shift to the predetermined voltage level. <P>COPYRIGHT: (C)2013,JPO&INPIT |
