一种高精度环形振荡器的设计

Design and Research of high precision ring oscillator

本文设计了一款输出频率为30MHz的高精度环形振荡器(Ring OSC),同时详细分析了环形振荡器中使用的补偿技术,包括温度补偿和电压补偿。spectre仿真显示,经过温度补偿和电压补偿之后,环形振荡器的输出精度在电压变化范围为1.6V^2.0V以及温度变化范围在-40℃~125℃时可以达到±1%以内的水平。

This paper designs a high precision ring oscillator with an output frequency of 30 MHz, and analyzes the temperature and supply voltage compensate principle,. Spectre simulation shows： after temperature and supply voltage compensate the ring oscillator output frequency drift can achieve ±1% when supply voltage range is 1.6 V^2.0 V and temperature range is -40℃~125℃.