| 摘要 |
PURPOSE:To constitute the signal processor so that it has a large dynamic range, and a signal processing of a high SN ratio can be executed by containing a connecting means for connecting rhe coupling capacity and a signal holding means, and a first amplifying means provided through a first switch means in both ends of the connecting means. CONSTITUTION:This signal processor is constituted of a capacity means 1 which becomes the coupling capacity for extracting an AC signal component of an input signal from an input terminal VIN, a reset means 3, a sampling means 6 which becomes a connecting means, a holding means 2 which becomes a signal holding means containing a capacitor and buffer means 5, 7 being adding means, and a switching means 4. The input characteristic of the buffer means also has the characteristic of an inclination 1 for passing through an origin. In this case, since only the signal component can be added substantially in order to cancel a noise component, etc., a dynamic range is enlarged, and also, an addition processing being excellent in an SN ratio can be executed. |
