TIME-TO-DIGITAL CONVERTER AND AN A/D CONVERTER INCLUDING THE SAME

摘要

A time-to-digital converter includes first and second phase distribution circuits and N time-to-digital conversion circuits. The first and second phase distribution circuits each includes a plurality of frequency dividers connected in a tree structure. The first and second phase distribution circuits each divides a signal received by the frequency dividers of root nodes into N signals. The first and second phase distribution circuits each outputs the N signals each having a different phase. The N time-to-digital conversion circuits each converts a phase difference between an i-th signal (where i is an integer from 0 to N-1) that is output from the first phase distribution circuit and another i-th signal that is output from the second phase distribution circuit into a digital value.

主权项

1. A time-to-digital converter, comprising:
first and second phase distribution circuits
each including a plurality of frequency dividers connected in a tree structure,each dividing a signal received by the frequency dividers of root nodes into N signals, andeach outputting the N signals each having a different phase; and N time-to-digital conversion circuits
each converting a phase difference between an i-th signal (where i is an integer from 0 to N-1) that is output from the first phase distribution circuit and another i-th signal that is output from the second phase distribution circuit into a digital value.