1. [Publications](/publications) 2. Voltage-Follower Coupling Quadrature Oscillator with Embedded Phase-Interpolator in 16nm FinFET # Voltage-Follower Coupling Quadrature Oscillator with Embedded Phase-Interpolator in 16nm FinFET ![](/sites/default/files/styles/wide/public/publications/PI-OSC_CICC.png?itok=ivoM0NqV) High-speed serial links require a very high frequency clock source. Multi-rings oscillator is a practical solution to this challenge. A new phase-interpolator embedded quadrature oscillator was designed and tested. Voltage-follower based cross-coupling loops create reliable and tunable phase relationship among OSC rings. The measurement results show that the proposed PI-OSC provides 1.25/0.97 LSB INL/DNL performance at 24GHz while consuming only 8.1mW power. This compact oscillator is suitable for clock generation in high-speed low-power links. ## Authors [Xi Chen](/person/xi-chen) [Sanquan Song](/person/sanquan-song) John Poulton (NVIDIA) [Nikola Nedovic](/person/nikola-nedovic) [Brian Zimmer](/person/brian-zimmer) [Stephen Tell](/person/stephen-tell) [Tom Gray](/person/tom-gray) ## Publication Date Monday, April 15, 2019 ## Published in [IEEE Custom Integrated Circuits Conference 2019](http://ieee-cicc.org/) ## Research Area [Circuits and VLSI Design](/research-area/circuits) ## Uploaded Files [PI-OSC\_CICC.pdf](https://research.nvidia.com/sites/default/files/pubs/2019-04_Voltage-Follower-Coupling-Quadrature//PI-OSC_CICC.pdf "Open file in new window")552.5 KB ## Copyright This material is posted here with permission of the IEEE. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to .