A Digitally Controlled Oscillator in a 65-nm CMOS process for SoC clock generation

2011 ◽  
Author(s):  
Eldar Zianbetov ◽  
Francois Anceau ◽  
Mohammad Javidan ◽  
Dimitri Galayko ◽  
Eric Colinet ◽  
...  
Keyword(s):  
Cmos Process ◽  
Clock Generation ◽  
Digitally Controlled ◽  
Digitally Controlled Oscillator

A digitally controlled oscillator in a 90 nm digital CMOS process for mobile phones

2005 ◽  
Vol 40 (11) ◽  
pp. 2203-2211 ◽  
Author(s):  
R.B. Staszewski ◽  
Chih-Ming Hung ◽  
N. Barton ◽  
Meng-Chang Lee ◽  
D. Leipold
Keyword(s):  
Mobile Phones ◽  
Cmos Process ◽  
Digital Cmos ◽  
Digitally Controlled ◽  
Digitally Controlled Oscillator

scholarly journals Digitally Controlled Oscillator with High Timing Resolution and Low Complexity for Clock Generation

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1377
Author(s):  
Duo Sheng ◽  
Wei-Yen Chen ◽  
Hao-Ting Huang ◽  
Li Tai
Keyword(s):  
Power Consumption ◽  
Complementary Metal Oxide Semiconductor ◽  
Logic Gates ◽  
Low Complexity ◽  
Design Flow ◽  
Oxide Semiconductor ◽  
Clock Generation ◽  
Timing Resolution ◽  
Digitally Controlled ◽  
Digitally Controlled Oscillator

This paper presents a digitally controlled oscillator (DCO) with a low-complexity circuit structure that combines multiple delay circuits to achieve a high timing resolution and wide output frequency range simultaneously while also significantly reducing the overall power consumption. A 0.18 µm complementary metal–oxide–semiconductor standard process was used for the design, and measurements showed that the chip had a minimum controllable timing resolution of 4.81 ps and power consumption of 142 µW with an output signal of 364 MHz. When compared with other designs using advanced processes, the proposed DCO demonstrated the best power-to-frequency ratio. Therefore, it can output a signal at the required frequency more efficiently in terms of power consumption. Additionally, because the proposed DCO uses digital logic gates only, a cell-based design flow can be implemented. Hence, the proposed DCO is not only easy to implement in different processes but also easy to integrate with other digital circuits.

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