Sensor arrangement and method for determining time-of-flight

A sensor arrangement for determining a time-of-flight of electromagnetic radiation, the sensor arrangement comprising:

• an emitter configured to periodically emit pulses of electromagnetic radiation depending on a first clock signal;
• a photonic demodulator configured to:
• detect electromagnetic radiation during detection intervals, wherein a timing of the detection intervals is defined by a second clock signal having a phase difference with respect to the first clock signal, and wherein each of the detection intervals comprises a first interval and a second interval following the first interval;
• generate a first demodulator signal depending on energy of the radiation detected during at least one of the first intervals;
• and
• generate a second demodulator signal depending on energy of the radiation detected during at least one of the second intervals;
• and
• a processing circuit configured to adapt the phase difference based on the first and the second demodulator signal and to generate an output signal being indicative of the time-of-flight based on the phase difference, wherein the processing circuit comprises a delay unit configured to generate the second clock signal by delaying the first clock signal by a delay, the delay depending on the first and the second demodulator signals.