Successive approximation time-to-digital converter based on vernier charging method

IEICE Electronics Express

Hui-He²  Hai-Gang Yang¹  Fei Wang¹  Xin-Gang Wang¹ 

[1] Institute of Electronics, Chinese Academy of Sciences;University of Chinese Academy of Sciences

关键词: time-to-digital converter (TDC);    mixed-signal;    successive approximation;    vernier charging;    voltage ratio;   

DOI  :  10.1587/elex.10.20130885

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)A successive approximation time-to-digital converter (TDC) is presented. The proposed TDC is based on the vernier charging method, and characterized with its timing resolution independent of the period of the reference clock. Further by including voltage ratio together with both current and capacitor ratios to enlarge the pulse stretch factor, a higher timing resolution is attained. The circuit is implemented in a 130nm CMOS process and occupies an area of 0.32×0.21mm2. According to the simulation results, the proposed TDC achieves typically 6.25ps resolution and consumes 0.9mW from a 1.5V supply voltage.

【 授权许可】

Unknown