Signal converter

A signal converter, comprising:

• a first capacitor comprising a first end coupled to a first input end receiving a first input signal and a second end;
• a second capacitor comprising a third end coupled to a second input end receiving a second input signal and a fourth end;
• a first switch and a second switch, coupled between a reference voltage end and an output end in series, the first switch and the second switch being coupled to the second end of the first capacitor, and being respectively controlled by a first feedback control signal and a second feedback control signal;
• a third switch and a fourth switch, coupled between the reference voltage end and the output end in series, the third switch and fourth switch being coupled to the fourth end of the second capacitor, and being respectively controlled by a third feedback control signal and a fourth feedback control signal;
• a first feedback control circuit, coupled between the second input end and one of the third end and the fourth end of the second capacitor, for providing the first feedback control signal to a control end of the first switch;
• a second feedback control circuit, coupled between the first input end and one of the third end and the fourth end of the second capacitor, for providing the second feedback control signal to a control end of the second switch;
• a third feedback control circuit, coupled between the first input end and one of the first end and the second end of the first capacitor, for providing the third feedback control signal to a control end of the third switch;
• and
• a fourth feedback control circuit, coupled between the second input end and one of the first end and the second end of the first capacitor, for providing the fourth feedback control signal to a control end of the fourth switch.