基于RC充电时间过零点不变性的高精度高稳定振荡器

计算机工程与科学 ›› 2023, Vol. 45 ›› Issue (01): 10-16.

基于RC充电时间过零点不变性的高精度高稳定振荡器

袁珩洲1,桑浩1，颜广达1，冯军2，梁斌1,郭阳1

（1.国防科技大学计算机学院，湖南长沙 410073;2.国防科技大学智能科学学院，湖南长沙 410073）

收稿日期:2022-09-13 修回日期:2022-10-28 接受日期:2023-01-25 出版日期:2023-01-25 发布日期:2023-01-25
基金资助:
国家自然科学基金（62104257）；国防科技大学校科研基金（ZK21-34）；国防科工重点实验室基金（WDZC20215250110）

A high precision and high stability oscillator based on RC charging time zero crossing invariance

YUAN Heng-zhou1,SANG Hao1,YAN Guang-da1,FENG Jun2,LIANG Bin1,GUO Yang1

（1.College of Computer Science and Technology,National University of Defense Technology,Changsha 410073;
2.College of Intelligent Science,National University of Defense Technology,Changsha 410073,China）

Received:2022-09-13 Revised:2022-10-28 Accepted:2023-01-25 Online:2023-01-25 Published:2023-01-25

摘要/Abstract

摘要： 设计了RC充电时间过零点不变性振荡器，该振荡器提供对电压和温度不敏感的高精度高稳定性时钟信号。分析并推导了RC充电过程中过零电压的时间不随电源电压变化的特性，采用温度补偿技术最大限度地保证了RC充电过程中过零电压的时间不随温度变化。基于180 nm工艺实现了该振荡器，仿真结果表明,该振荡器可以稳定输出2 MHz，电压从2.5 V~5.5 V的频率波动小于1%，温度从-40 ℃~125 ℃的频率波动小于1%，PVT条件下的最大电流不超过150 μA。

关键词: RC充电时间过零点不变性, 高精度, 高稳定, 振荡器

Abstract: A RC charging time zero crossing invariant oscillator is designed to provide high precision and high stability clock signals insensitive to voltage and temperature. This paper analyzes and deduces the characteristics that the time of zero crossing voltage does not vary with the power supply voltage in the process of RC charging, and adopts the temperature compensation technology to ensure that the time of zero crossing voltage does not vary with the temperature to the maximum extent. The simulation results show that the oscillator can output 2 MHz stably, the frequency fluctuation from 2.5 V to 5.5 V is less than 1%, the temperature fluctuation from -40 ℃ to 125 ℃ is less than 1%, and the maximum current under PVT condition is less than 150 μA.

Key words: RC charging time zero crossing invariance, high precision, high stability, oscillator

袁珩洲, 桑浩, 颜广达, 冯军, 梁斌, 郭阳. 基于RC充电时间过零点不变性的高精度高稳定振荡器[J]. 计算机工程与科学, 2023, 45(01): 10-16.

YUAN Heng-zhou, SANG Hao, YAN Guang-da, FENG Jun, LIANG Bin, GUO Yang. A high precision and high stability oscillator based on RC charging time zero crossing invariance[J]. Computer Engineering & Science, 2023, 45(01): 10-16.

参考文献［7］

［1］	Prinzie J,Steyaert M,Leroux P,et al.A single-event upset robust,2.2 GHz to 3.2 GHz,345 fs jitter PLL with triple-modular redundant phase detector in 65 nm CMOS［C］∥Proc of IEEE Asian Solid-State Circuits Conference, 2016:285-288.
［2］	Yuan H Z, Chen J J, Bin L,et al.An SEU/SET-tolerant phase frequency detector with double-loop self-sampling technology for clock data recovery［J］.IEEE Transactions on Nuclear Science,2019,66(7):1483-1490.
［3］	Rau M, Oberst T,Lares R,et al.Clock/data recovery PLL using half-frequency clock［J］.IEEE Journal of Solid-State Circuits,1997,32(7):1156-1159.
［4］	Denier U.Analysis and design of an ultralow-power CMOS relaxation oscillator［J］.IEEE Transactions on Circuits and Systems I:Regualr Papers,2010,57(8):1973-1982.
［5］	Savanth A,Weddell A S,Myers J,et al. A sub-nW/kHz relaxation oscillator with ratioed reference and sub-clock power gated comparator［J］.IEEE Journal of Solid-State Circuits,2019，54(11):3097-3106.
［6］	Lee J,Park P,Cho S H,et al.5.10 A 4.7 MHz 53 μW fully differential CMOS reference clock oscillator with 22 dB worst-case PSNR for miniaturized SoCs［C］∥Proc of 2015 IEEE International Solid-State Circuits Conference,2015:1-3.
［7］	Allen P E,Holberg D R.CMOS analog circuit design［M］.Oxford:Oxford University Press,2002.

[1]	何康, 黄春, 姜浩, 谷同祥, 齐进, 刘杰, . 基于MPI的高精度归约函数设计与实现[J]. 计算机工程与科学, 2021, 43(04): 594-602.
[2]	黄春, 姜浩, 谷同祥, 齐进, 刘文超. 面向飞腾处理器的高精度求和与点乘算法实现和优化[J]. 计算机工程与科学, 2021, 43(01): 1-8.
[3]	赵信，潘天锲,王飙. 一款高精度数控振荡器设计与实现[J]. 计算机工程与科学, 2018, 40(02): 218-223.
[4]	李洪珠，孙佳月. 一种基于EEMD的新型谐波误差分析策略[J]. J4, 2016, 38(04): 820-826.
[5]	何丰,胡俊,马浩,吴艳秋. 基于弧思想的改进的角点检测算法[J]. J4, 2011, 33(2): 108-111.
[6]	马廷福曹富军葛永斌. 基于非等距网格高阶紧致差分格式的多重网格算法研究[J]. J4, 2008, 30(9): 77-81.