| 摘要 |
PROBLEM TO BE SOLVED: To provide a ramp generating circuit capable of improving the ratio of signal to noise (S/N ratio) and reducing an output error, and to provide an A/D converter. SOLUTION: The ramp generating circuit has: a charge supply section 21 for generating fixed charge for each fixed time; an integration circuit 22 for storing charge generated from the charge supply section and for converting to voltage; and an attenuation section 23 for outputting voltage, where the noise value of the output voltage of the integration circuit is attenuated, to an output terminal. COPYRIGHT: (C)2008,JPO&INPIT
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