A 16-bit 2.0-ps Resolution Two-Step TDC in 0.18-µm CMOS Utilizing Pulse-Shrinking Fine Stage With Built-In Coarse Gain Calibration.

This paper proposes a time-to-digital converter (TDC) that achieves wide input range and fine time resolution at the same time. The proposed TDC utilizes pulse-shrinking (PS) scheme in the second stage for a fine resolution and two-step (TS) architecture for a wide range. The proposed PS TDC prevents an undesirable nonuniform shrinking rate issue in the conventional PS TDCs by utilizing a built-in...