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A 0.004-mm ^{2} Portable Multiphase Clock Generator Tile for 1.2-GHz RISC Microprocessor

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7 Author(s)

Portable multiphase clock generators capable of adjusting its clock phase according to input clock frequencies have been developed both in a 0.18-mum and in a 0.13-mum CMOS technologies. They consist of a full-digital CMOS circuit design that leads to a simple, robust, and portable IP. In addition, their open-loop architecture lead to no jitter accumulation and one-cycle lock characteristic that enables clock-on-demand circuit structures. The implemented low power clock generator tile in a 0.13-mum CMOS technology occupies only 0.004 mm 2 and operates at variable input frequencies ranging from 625 MHz to 1.2 GHz within a plusmn 2% phase error having one-cycle lock time.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:55 ,  Issue: 2 )