| 摘要 |
PROBLEM TO BE SOLVED: To provide a clamping circuit having little offset in a DC voltage of an output signal. SOLUTION: According to a clamp pulse and an offset compensation pulse which come in time division, a selector of a switch means 15 is connected to an own selecting end. While a clamp switching pulse having a duplicate period on the offset compensation pulse does not come in, selectors of switch means 7, 9 are connected to a selection end A. While the clamp switching pulse comes in, the selectors of the switch means 7, 9 are connected to a selection end B. While the clamp pulse comes in, a clamp operation is carried out and while the offset compensation pulse comes in, an offset compensation operation is carried out. |
