| 摘要 |
PROBLEM TO BE SOLVED: To supply a signal converter capable of outputting a signal with small spectral noise close to a design value.SOLUTION: A control section 10 of a signal converter 1 outputs a digital signal A+B generated by delta sigma modulation system, and including pulse signals A and B. The pulse signals A and B have frequency bands different from each other. Based on the digital signal A+B, a signal containing the pulse signal A but not containing the pulse signal B, and a signal containing the pulse signal B but not containing the pulse signal A are generated. The signal B is turned on continuously at least in a period where the pulse signal A is turned off.SELECTED DRAWING: Figure 1 |
