25ps정밀도 시간디지털 변환기

초록

This paper describes a time to digital converter (TDC) that measures the time interval between two signals and converts to digital signals. The proposed TDC circuit has achieved a high resolution (25ps) by using a high-speed digital sampler. By sample every 25ps interval at the ring time of START and STOP signals, time difference between two signals can be measured more exactly than the method which used latch instead of sampler.