Digital representing of analog signals using event timing information

An approach to digitizing analog signals based on specific event timing is proposed. The events that have to be timed in this case with pico-second resolution and high precision are the signal and a sinusoidal reference function crossings. It is shown that the nonuniform sequences of the signal sample values obtained in this way carry the information needed for representing the respective analog signals in the digital domain. Software/hardware implementation of this method, based on high performance Event Timer A033-ET, is developed, evaluated and discussed.