3.3-mA 2.8-GHz bufferless LC oscillator directly driving a 10-mm on-chip clock distribution line

Masahiro Ichihashi, Shogo Harada, Haruichi Kanaya

Research output: Contribution to journalArticle

Abstract

<p>A bufferless <i>LC</i> oscillator can potentially offer an attractive solution for low-power, high-speed clock distribution due to the absence of repeaters on the clock distribution line and utilization of <i>LC</i> resonance. However, conventional bufferless <i>LC</i> oscillators suffer from a fundamental tradeoff between the frequency and power consumption due to their high-frequency sensitivity. In this paper, we have introduced a low-frequency sensitivity bufferless <i>LC</i> oscillator that is directly connected to a 10-mm on-chip clock distribution line in the TSMC 0.18-µm 1-Poly 6-Metal CMOS technology. The core area of the <i>LC</i> oscillator is only 270 × 280 µm<sup>2</sup>. The measurement results show that a 2.8-GHz oscillation frequency, 3.3-mA current consumption, and −112.8 dBc/Hz phase noise at 1 MHz offset can be achieved.</p>
Original languageEnglish
Pages (from-to)20190301-20190301
Number of pages1
JournalIEICE Electronics Express
Volume16
Issue number16
DOIs
Publication statusPublished - 2019

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