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首页> 外文期刊>IEEE Journal of Solid-State Circuits >SiGe Clock and Data Recovery System Based on Injection-Locked Oscillator for 100 Gbit/s Serial Data Link
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SiGe Clock and Data Recovery System Based on Injection-Locked Oscillator for 100 Gbit/s Serial Data Link

机译：SiGe Clock and Data Recovery System Based on Injection-Locked Oscillator for 100 Gbit/s Serial Data Link

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摘要

Clock and data recovery (CDR) systems are the first logic blocks in serial data receivers and the latter's performance depends on the CDR. In this paper, a 100 Gbit/s CDR designed in 130 nm BiCMOS SiGe is presented. The CDR uses an injection locked oscillator (ILO) which delivers the 100 GHz clock. The inherent phase shift between the recovered clock and the incoming data is compensated by a feedback loop which performs phase and frequency tracking. Furthermore, a windowed phase comparator has been used, first to lower the classical number of gates, in order to prevent any delay skews between the different phase detector blocks, then to decrease the phase comparator operating frequency, and furthermore to extend the ability to track zero bit patterns The measurements results demonstrate a 100 GHz clock signal extracted from 50 Gb/s input data, with a phase noise as low as $-$98 dBc/Hz at 100 kHz offset from the carrier frequency. The rms jitter of the 25 GHz recovered data is only 1.2 ps. The power consumption is 1.4 W under 2.3 V power supply.

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