Abstract: In an embodiment, a method includes: resetting respective count values of a plurality of analog counters to an initial count value, each analog counter of the plurality of analog counters corresponding to a histogram bin of a time-of-flight (ToF) histogram; after resetting the respective count values, receiving a plurality of digital addresses from a time-to-digital converter (TDC); during an integration period, for each received digital address, selecting one analog counter based on the received digital address, and changing the respective count value of the selected one analog counter towards a second count value by a discrete amount, where each analog counter has a final count value at an end of the integration period; and after the integration period, determining an associated final bin count of each histogram bin of the ToF histogram based on the final count value of the corresponding analog counter.

Abstract: In an embodiment, a method includes: resetting respective count values of a plurality of analog counters to an initial count value, each analog counter of the plurality of analog counters corresponding to a histogram bin of a time-of-flight (ToF) histogram; after resetting the respective count values, receiving a plurality of digital addresses from a time-to-digital converter (TDC); during an integration period, for each received digital address, selecting one analog counter based on the received digital address, and changing the respective count value of the selected one analog counter towards a second count value by a discrete amount, where each analog counter has a final count value at an end of the integration period; and after the integration period, determining an associated final bin count of each histogram bin of the ToF histogram based on the final count value of the corresponding analog counter.