A stochastic sampling time-to-digital converter with tunable 180–770fs resolution, INL less than 0.6LSB, and selectable dynamic range offset

We introduce a stochastic time-to-digital converter (TDC) that has 180-770fs tunable resolution, less than 0.6LSB INL, and selectable dynamic range offset. Previous arbiter-based TDCs have fine resolution but small dynamic range which is difficult to calibrate. Our approach uses comparators as decision elements to precisely control dynamic range offset.