A 30-MHz, 90-ppm/°C fully-integrated clock reference generator with frequency-locked loop

K. Ueno, T. Asai, Y. Amemiya
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引用次数: 42

Abstract

A temperature- and supply-independent clock generator has been developed using 0.35-µm CMOS technology. This generator is based on a simple frequency-locked loop technique and can be implemented monolithically without using LC resonant circuits, quartz resonators, and MEMS oscillators. A sample device that is tunable over a wide frequency range of 2–100 MHz was designed and fabricated. It showed a temperature coefficient of 90 ppm/°C, a line regulation of 4%/V, and a power dissipation of 180 µW, at a frequency of 30 MHz. The process sensitivity (σ/μ) was 2.7%. This clock generator can be used as an on-chip reference clock circuit.
一个30 mhz, 90 ppm/°C完全集成时钟参考发生器锁频环路
采用0.35µm CMOS技术,研制了一种与温度和电源无关的时钟发生器。该发生器基于简单的锁频环技术,可以在不使用LC谐振电路,石英谐振器和MEMS振荡器的情况下单片实现。设计并制作了一个在2 - 100mhz宽频率范围内可调谐的样品器件。其温度系数为90 ppm/°C,线路调节率为4%/V,功耗为180µW,频率为30 MHz。工艺灵敏度(σ/μ)为2.7%。该时钟发生器可用作片上参考时钟电路。
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