A 0.357 ps Resolution, 2.4 GHz Time-to-Digital Converter with Phase-Interpolator and Time Amplifier

作者:Kim YoungHwa*; Park AnSoo; Park Joon Sung; Pu YoungGun; Park Hyung Gu; Kim HongJin; Lee Kang Yoon
来源:IEICE - Transactions on Electronics, 2011, E94C(12): 1896-1901.
DOI:10.1587/transele.E94.C.1896

摘要

In this paper, we propose a two-step TDC with phase-interpolator and time amplifier to satisfy high resolution at 2.4 GHz input frequency by implementing delay time less than that of an inverter delay. The accuracy of phase-interpolator is improved for process variation using the resistor automatic-tuning circuit. The gain of time amplifier is improved using the delay time difference between two delay cells. It is implemented in a 0.13 mu m CMOS process with a die area of 0.68 mm(2). And the power consumption is 14.4 mW at a 1.2 V supply voltage. The resolution and input frequency of the TDC are 0.357 ps and 2.4 GHz, respectively.

  • 出版日期2011-12

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