Calibration of a time-to-digital converter using a virtual phase-locked loop

In at least one embodiment, a method includes generating a digital time code corresponding to an input clock signal using a time-to-digital converter responsive to a reference clock signal and a time-to-digital converter calibration signal. The method includes generating the time-to-digital converte...

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Bibliographische Detailangaben
Hauptverfasser:	Monk, Timothy Adam, Pastorello, Douglas F, Balakrishnan, Krishnan, Ranganathan, Raghunandan Kolar
Format:	Patent
Sprache:	eng
Schlagworte:	AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRICITY HOROLOGY PHYSICS TIME-INTERVAL MEASURING
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Beschreibung
Zusammenfassung:	In at least one embodiment, a method includes generating a digital time code corresponding to an input clock signal using a time-to-digital converter responsive to a reference clock signal and a time-to-digital converter calibration signal. The method includes generating the time-to-digital converter calibration signal based on the digital time code. Generating the time-to-digital converter calibration signal includes generating a digital error signal based on the digital time code and an estimated digital time code, and adapting the time-to-digital converter calibration signal based on the digital error signal.