Abstract
A novel digitally-controlled oscillator (DCO) is reported. Utilizing a new capacitive load, the new DCO is capable of producing much higher output frequencies than existing DCOs. All other components are fully digital and modular, allowing portability to any CMOS process and customization for different applications. At the heart of the DCO is a digital ring oscillator (DRO) that utilizes the new shunt-capacitive loads. Unprecedented higher frequencies are obtained through a novel idea of electrically removing the effect of un-enabled loads. Simple design conditions for achieving proper operation of the DRO are provided. Spice simulations verified the correct and superior operation of the DCO even with device mismatch. A custom layout of the DRO was generated using LFoundry's 150 nm technology. The total DRO area was found to be 418 μm2.
| Original language | English |
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| Title of host publication | GLSVLSI 2013 - Proceedings of the ACM International Conference of the Great Lakes Symposium on VLSI |
| Pages | 77-82 |
| Number of pages | 6 |
| DOIs | |
| State | Published - 2013 |
Publication series
| Name | Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI |
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Bibliographical note
Funding Information:This work was supported by King Abdulaziz City for Science and Technology Through Development Grant 4-14/2010 . Also, facilities support by King Fahd University of Petroleum and Minerals is highly appreciated by the authors.
Keywords
- digital circuits
- digitally-controlled oscillator (dco)
- systems-on-chip (socs)
ASJC Scopus subject areas
- General Engineering