Mitsubishi Electric Corporation

Yoshiaki Morino

Mitsuhiro Shimozawa

Masaomi Tsuru

In a time-to-digital converter, a digital signal outputted by a phase information generator is inputted to each of the D terminals of first through Nth (N is a natural number equal to or greater than 2) D-type flip-flop circuits in a first flip-flop group, each of the D terminals is connected to one end of a first delay element, the C terminal of the first D-type flip-flop circuit is connected to another end of the first delay element, the other end of the first delay element is connected to an input terminal, and, when N, the number of flip-flop circuits in the first flip-flop group, is equal to or greater than 3, for each J a natural number from 2 to N&#x2212;1, C terminal of the (J+1)th D-type flip-flop circuit is connected to one end of the Jth delay element and one end of the (J&#x2212;1)th delay element is connected to the other end of the Jth delay element.

Time-to-digital converter

One inductor and another inductor are magnetically coupled to each other. A variable current source controls the current flowing in the one inductor. By controlling the current flowing in the one inductor, the inductance value of the other inductor is made variable.

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Tokyo, Japan

Yoshiaki Morino