公开(公告)号：US10277215B2

公开(公告)日：2019-04-30

申请号：US15581033

申请日：2017-04-28

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Meng-Ting Tsai ,  Chien-Chun Tsai ,  Mu-Shan Lin ,  Wen-Hung Huang ,  Yu-Chi Chen

IPC: H03K5/13 ,  H03K5/131 ,  H03K5/133 ,  H03K5/00

Abstract: Digital controlled delay lines are provided. A digital controlled delay line includes a plurality of delay cells coupled in a chain forming a propagation path to propagate an input signal and to delay the input signal by a delay time. The propagation path is formed when a single delay cell is operated in a feedback mode, the delay cells previous to the single delay cell in the chain are operated in a propagation mode, a subsequent delay cell following the single delay cell in the chain is operated in a standby mode, and the delay cells following the first subsequent delay cell in the chain are operated in an idle mode.