A 10-Gb/s CMOS CDR and DEMUX IC With a Quarter-Rate Linear Phase Detector

This paper presents a 10-Gb/s clock and data recovery (CDR) and demultiplexer IC in a 0.13-$muhbox m$CMOS process. The CDR uses a new quarter-rate linear phase detector, a new data recovery circuit, and a four-phase 2.5-GHz LC quadrature voltage-controlled oscillator for both wide phase error pulses and low power consumption. The chip consumes 100 mA from a 1.2-V core supply and 205 mA from a 2.5-V I/O supply including 18 preamplifiers and low voltage differential signal (LVDS) drivers. When 9.95328-Gb/s 2³1-1 pseudorandom binary sequence is used, the measured bit-error rate is better than 10⁻15and the jitter tolerance ishbox0.5UI_ pp, which exceeds the SONET OC-192 standard. The jitter of the recovered clock is 2.1hbox ps_ rmsat a 155.52MHz monitoring clock pin. Multiple bit rates are supported from 9.4 Gb/s to 11.3 Gb/s.