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A power and area efficient CMOS clock/data recovery circuit for high-speed serial interfaces

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1 Author(s)
Dao-Long Chen ; Symbios Logic Inc., Fort Collins, CO, USA

A power and area efficient CMOS clock/data recovery circuit designed for a wide range of applications in high-speed serial data communications is described. It uses an analog phase-locked loop (PLL) to generate the high-speed clocks with an absolute rms jitter of less than 60 ps and a digital PLL which is designed to minimize chip area and power consumption to recover the clock and data signals from the incoming data stream. Fabricated in a 0.8 μm single-polysilicon, double-metal CMOS process, the digital PLL only consumes 45 mW at 125 Mb/s from a single 5 V supply, while the analog PLL consumes 92 mW. The chip area is 1.7 mm2 for the digital PLL and 0.44 mm2 for the analog PLL. It can handle an input data rate up to 280 Mb/s

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:31 ,  Issue: 8 )