PHASE MIXING CIRCUIT AND DELAY LOCKED LOOP CIRCUIT EQUIPPED WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a phase mixing circuit, which prevents the increase of jitter even when PVT is fluctuated, and a delay locked loop circuit equipped with the circuit.

SOLUTION: The phase mixing circuit is provided with: a phase mixing unit for mixing a first input signal and a second input signal in response to a phase control signal to output a phase mixing signal whose phase is shifted by an amount corresponding to the multitude of natural number of a unit phase value; and a phase value regulating unit for regulating the unit phase value in response to the PVT code signal comprising PVT fluctuation information.

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