Time-to-digital converter and operation method thereof

摘要

A time-to-digital converter adopted to transform an enabled time of a time signal into an output data and an operation method thereof are provided. The operation method includes the following steps: providing a counter clock signal by a digital phase locked loop according to a reference clock signal; providing a counter result by a counter unit according to the counter clock signal and the time signal; comparing the enabled time of the time signal with a minimum time to provide a comparison result by a comparator unit; and outputting the counter result as the output data according to the comparison result when the enabled time of the time signal is longer than the minimum time.

主权项

1. A time-to-digital converter configured for transforming an enabled time of a time signal into an output data, comprising:
a comparator unit configured for comparing the enabled time of the time signal with a minimum time to provide a comparison result; a digital phase locked loop for receiving a reference clock signal to provide a counter clock signal; and a counter unit for receiving the counter clock signal to provide a counter result according to the counter clock signal and the time signal; wherein the counter result is outputted as the output data according to the comparison result when the enabled time of the time signal is longer than the minimum time.