0.5 V Multi-Phase Digital Controlled Oscillator With Smooth Phase Transition Circuit

Abul Hasan Johari,Satoshi Kumaki,Takeshi Matsubara,Isamu Hayashi,Hiroki Ishikuro

PROCEEDINGS OF THE 2010 IEEE ASIA PACIFIC CONFERENCE ON CIRCUIT AND SYSTEM (APCCAS)（2010）

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摘要

In this paper we have shown the design of a 0.5 V multi-phase digital controlled oscillator (DCO) in 65-nm CMOS. The DCO generates 32 phases and achieved output frequency range from 0.1MHz to 128MHz with maximum power consumption of 0.28 mu W/MHz in Cadence spectre circuit simulations. To prevent glitch during phase switching, the circuit for smooth phase transition is proposed and successfully demonstrated in circuit simulation.

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关键词

Array Oscillator, DCO, Multiphase, Ultra-Low Voltage, Multiplexer

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