Modeling of Non-linearity in Digitally Controlled Oscillator in 0.18µm CMOS Technology

Abhishek TOMAR; Shashank LINGALA; Ramesh K. POKHAREL; Haruichi KANAYA; Keiji YOSHIDA

doi:10.1587/transele.E93.C.1548

IEICE Transactions on Electronics

Online ISSN : 1745-1353
Print ISSN : 0916-8524

Regular Section

Modeling of Non-linearity in Digitally Controlled Oscillator in 0.18µm CMOS Technology

Abhishek TOMAR, Shashank LINGALA, Ramesh K. POKHAREL, Haruichi KANAYA, Keiji YOSHIDA

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Keywords: DCO, DNL, tuning range, monotonicity, phase noise, 0.18µm CMOS

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2010 Volume E93.C Issue 10 Pages 1548-1549

DOI https://doi.org/10.1587/transele.E93.C.1548

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Abstract

An analytical method to make a trade off between tuning range and differential non-linearity (DNL) for a digitally controlled oscillator (DCO) is proposed. To verify the approach, a 12bit DCO is designed, implemented in 0.18µm CMOS technology, and tested. The measured DNL was −0.41 Least Significant Bit (LSB) without degrading other parameters which is the best so far among the reported DCOs.

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