Low Jitter and Wide Range VCO for CD/DVD/Blu-ray Disc

Takashi Kawamoto, Masaru Kokubo, Shingi Kusakabet, Takehisa Yokohamat
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引用次数: 3

Abstract

A voltage-controlled oscillator (VCO) for optical-disc-drive (ODD) applications was developed. This VCO selects the most appropriate current-controlled oscillator (CCO) from three CCOs in order to satisfy various ODD read/write speeds. It produces the frequency characteristics of a maximum frequency limiter in order to prevent unlocking of a PLL. Moreover, the VCO applies a trimming method to correct degradation of frequency characteristics due to process variation. A post-layout simulation of the VCO performance, using the TSMC 90-nm CMOS process, was performed, and the simulation results show that the VCO satisfies each of the 52X-CD, 16X-DVD, and 12X-BD frequency specifications with jitter less than 2%
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低抖动和宽范围VCO的CD/DVD/蓝光光盘
研制了一种用于光盘驱动器的压控振荡器(VCO)。该VCO从三个电流控制振荡器(CCO)中选择最合适的电流控制振荡器(CCO),以满足各种奇数读/写速度。它产生最大频率限制器的频率特性,以防止锁相环解锁。此外,VCO采用了一种微调方法来纠正由于工艺变化而导致的频率特性退化。采用台积电90纳米CMOS工艺对VCO进行了布局后性能仿真,仿真结果表明,该VCO满足52X-CD、16X-DVD和12X-BD的频率要求,抖动小于2%
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