NDLI: A novel structure for DCO PLLs with equivalent 16 bit digital phase quantization, digital loop filter and 18ps long-term jitter

Content Provider	IEEE Xplore Digital Library
Author	Sandner, C. Da Dalt, N.
Copyright Year	2000
Description	Author affiliation: Infineon Technologies, Villach, Austria (Sandner, C.)
Abstract	This paper describes a new structure for Digital Controlled Oscillator Phase Locked Loops (DCOPLL) with fine quantization of the phase information, generic digital loop filter and digitally controlled crystal oscillator. It is particularly suited for applications in which high frequency resolution and low jitter are requested. The way in which the phase information is finely quantized allows the designer to choose any kind of digital loop filter, which transfer function best suits the application. This concept has been implemented in a 0.5µm digital CMOS technology, using a digitally controlled crystal oscillator (DCXO) and a VHDL based 3rd order loop filter. Measurement results show that long-term jitter is below 18ps.
Starting Page	260
Ending Page	263
File Size	1996372
Page Count	4
File Format	PDF
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-19
Access Restriction	Subscribed
Rights Holder	Non IEEE
Subject Keyword	Quantization Digital filters Jitter Digital control Digital-controlled oscillators Information filtering Information filters CMOS technology Phase locked loops Frequency
Content Type	Text
Resource Type	Article

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A novel structure for DCO PLLs with equivalent 16 bit digital phase quantization, digital loop filter and 18ps long-term jitter