Patent ID: 11936389
Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A time of flight system comprising:
a receiver configured to provide a reference clock signal;
a driver circuit configured to generate a driver signal; and
a timing alignment system comprising a delay-locked loop (DLL) configured to control timing of the driver signal based on the reference clock signal, the delay-locked loop including a detector configured to generate a delay control signal based on comparing a reference clock signal to a feedback clock signal, and a controllable delay line configured to generate the feedback clock signal by delaying the reference clock signal based on the delay control signal, wherein the timing alignment system further comprises a delay compensation circuit configured to provide an adjustment to the controllable delay line to compensate for a delay of the feedback clock signal in reaching the detector, and an external delay circuit, wherein the DLL is operable in a first mode in which the external delay circuit is bypassed, the delay compensation circuit configured to determine a measured delay through the external delay circuit when the DLL operates in the first mode, and to provide the adjustment to the controllable delay line based on the measured delay.