Digital To Time Converter System And Calibration Method Therefor

Abstract: A digital to time converter (DTC) system is disclosed. The DTC system comprises a DTC circuit configured to generate a DTC output clock signal at a DTC output frequency, based on a DTC code. In some embodiments, the DTC system further comprises a calibration circuit comprising a period error determination circuit configured to determine a plurality of period errors respectively associated with a plurality consecutive edges of the DTC output clock signal. In some embodiments, each period error of the plurality of period errors comprises a difference in a measured time period between two consecutive edges of the DTC output clock signal from a predefined time period. In some embodiments, the calibration circuit further comprises an integral non-linearity (INL) correction circuit configured to determine a correction to be applied to the DTC code based on a subset of the determined period errors.

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