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A monotonic and low-power digitally controlled oscillator using standard cells for SoC applications

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3 Author(s)
Duo Sheng ; Dept. of Electr. Eng., Fu Jen Catholic Univ., New Taipei, Taiwan ; Ching-Che Chung ; Jhih-Ci Lan

In this paper, a monotonic and low-power digitally controlled oscillator (DCO) with cell-based design for System-On-Chip (SoC) applications is presented. The proposed DCO employs a cascade-stage structure to achieve high resolution and wide range at the same time. Besides, based on the proposed two-level controlled interpolation structure, the proposed DCO can provide monotonic delay with low power consumption and low circuit complexity as compared with conventional approaches. Simulation results show that power consumption of the proposed DCO can be improved to 0.337mW (@1118MHz) with 0.82ps resolution. In addition, the proposed DCO can be implemented with standard cells, making it easily portable to different processes and very suitable for SoC applications.

Published in:

Quality Electronic Design (ASQED), 2012 4th Asia Symposium on

Date of Conference:

10-11 July 2012