A Self-Referred Clock Jitter Measurement Circuit in Wide Frequency Range

In this paper, a jitter measurement circuit with its calibration scheme for measuring peak-to-peak jitters of clock is proposed and demonstrated. By applying the Vernier oscillators, the mismatching effect and area overhead are both reduced compared with conventional circuits using Vernier delay lines. With high resolution (7.98ps) and high speed (20.08ps/5k samples), the proposed circuit develops a tunable frequency range of input clock and improves the accuracy of the measurement results. The proposed circuit may be applied in multi-clocks´ measurement