Patent ID: 7564293

Claim:
A signal conversion circuit for converting an inputted differential signal into a single-ended signal, comprising: a differential amplifier circuit for amplifying the differential signal, and generating a first non-inverted signal and a first inverted signal being inverted the first non-inverted signal; a first inverter for generating a second non-inverted signal being inverted the first inverted signal; and an interpolation unit for interpolating a phase difference between the first non-inverted signal and the second non-inverted signal, wherein the interpolation circuit comprises: a first interpolation inverter for inverting the first non-inverted signal; a second interpolation inverter for inverting the second non-inverted signal; a third interpolation inverter for inverting depending on a charge/discharge of the capacitor; and a capacitor for charging/discharging depending on an output signal from the first and the second interpolation inverters.