Title :
A Wide-Range All-Digital Duty Cycle Corrector with a Period Monitor
Author :
Kao, Shao-Ku ; Liu, Shen-luan
Author_Institution :
Nat. Taiwan Univ., Taipei
Abstract :
A wide-range all-digital duty cycle corrector (DCC) with a period monitor is presented. It corrects the duty cycle within four cycles. It generates the output clock of 50% duty cycle when the input duty cycle is within 10% ~ 90%. After this DCC locked, a closed-loop monitor continuously tracks the period of input clock to keep 50% duty-cycle in every eight cycles. The proposed circuit has been fabricated in a 0.18 um CMOS technology. The measured duty cycle error is between 1.3% and 1.6% and the measured frequency range is from 1GHz to 1.6 GHz.
Keywords :
CMOS integrated circuits; digital circuits; frequency measurement; CMOS technology; all-digital duty cycle corrector; closed-loop monitor; period monitor; Analog-digital conversion; CMOS technology; Circuits; Clocks; Delay lines; Detectors; Feedback; Frequency measurement; Monitoring; Timing; all-digital; duty cycle; duty cycle corrector;
Conference_Titel :
Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on
Conference_Location :
Tainan
Print_ISBN :
978-1-4244-0637-1
Electronic_ISBN :
978-1-4244-0637-1
DOI :
10.1109/EDSSC.2007.4450134
