26.5 A 0.1-to-0.2V Transformer-Based Switched-Mode Folded DCO in 22nm FDSOI With Active Step-Down Impedance Achieving 197dBc/Hz Peak FoM and 40MHz/V Frequency Pushing

The continuous improvement in ultra-low-power/voltage (ULP/V) circuits paves the way for new near-battery-free IoE applications. In this work, we propose an LC oscillator that can significantly improve phase-noise (PN) performance and the figure of merit (FoM) at ULV supply levels. The structure is...

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Bibliographic Details
Main Authors: El-Aassar, Omar, Rebeiz, Gabriel M.
Format: Conference Proceeding
Language:English
Subjects:
Frequency measurement
Harmonic analysis
Impedance
MOS devices
Oscillators
Resonant frequency
Switches
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Summary:The continuous improvement in ultra-low-power/voltage (ULP/V) circuits paves the way for new near-battery-free IoE applications. In this work, we propose an LC oscillator that can significantly improve phase-noise (PN) performance and the figure of merit (FoM) at ULV supply levels. The structure is applied to a 4.15-to-4.97GHz switched-mode DCO that operates from a less-than-100mV supply and achieves a peak FoM of 197dBc/Hz at a 150mV supply.
ISSN:2376-8606
DOI:10.1109/ISSCC.2019.8662516