IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Solid-State Circuit Design - Architecture, Circuit, Device and Design Methodology
Injection Locked Charge-Pump PLL with a Replica of the Ring Oscillator
Jeonghoon HANMasaya MIYAHARAAkira MATSUZAWA
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2014 Volume E97.C Issue 4 Pages 316-324

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Abstract

This paper derives a maximum lock range of an injection locked ring oscillator in a direct injection method and presents an injection locked charge-pump phase-locked loop (CPPLL) with a replica of a ring oscillator. The proposed injection-locked PLL separates the injection-locked VCO from the continuous phase-tracking loop of the PLL such that can provide stable lock-state maintenance and tolerance to temperature and supply voltage variation. The measurement results show that the proposed injection-locked PLL can be tolerable to voltage variation of 11.2% in supply voltage of 1.2V. In-band noises of the injection-locked oscillator at offset frequencies of 10kHz and 100kHz are -108.2dBc/Hz and -114.6dBc/Hz, respectively.

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© 2014 The Institute of Electronics, Information and Communication Engineers
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