Design of a high-precision low-power CMOS RC oscillator

CHEN Fu-tao

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Design of a high-precision low-power CMOS RC oscillator

更新时间：2026-09-04

- Design of a high-precision low-power CMOS RC oscillator
- Vol. 36, Issue 6, Pages: 74-78(2019)
- 作者机构：
  
  杭州士兰微电子股份有限公司,江苏,杭州,214035
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2019
- 稿件说明：
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陈富涛. 一种高精度低功耗RC振荡器设计[J]. 微电子学与计算机, 2019, 36(6): 74-78.

CHEN Fu-tao. Design of a high-precision low-power CMOS RC oscillator[J]. 2019, 36(6): 74-78.
陈富涛. 一种高精度低功耗RC振荡器设计[J]. 微电子学与计算机, 2019, 36(6): 74-78. DOI：

CHEN Fu-tao. Design of a high-precision low-power CMOS RC oscillator[J]. 2019, 36(6): 74-78. DOI：

摘要

本文设计了一种具有较强的电源电压抑制能力和良好的温度特性的RC振荡电路

它由稳压源电路和RC振荡电路组成

稳压源电路输出不受电源电压和温度影响的调制电平VREG

给RC振荡电路提供工作电压以产生稳定的振荡频率.该电路特点是:结构简单

功耗低

振荡频率精确

受电源电压和环境温度影响较低

基于CSMC 0.35 μm CMOS工艺设计

完成Hspice仿真.

Abstract

In this paper

a RC Oscillator with lower power consumption

low supply voltage and temperature sensitivity was proposed. It was composed of a voltage regulation and a RC Oscillator. The regulated voltage VREG was not affected by the power supply voltage and temperature. It provided a supply voltage for the RC oscillation circuit to generate a stable oscillation frequency. The circuit is characterized by simple structure

low power consumption

accurate oscillation frequency

less affected by power supply voltage and ambient temperature. Hspice simulation was made based on CSMC 0.35μm CMOS prcess.

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references

SANSEN W M C.模拟集成电路设计精粹[M].陈莹梅, 译.北京: 清华大学出版社, 2008: 150.

PAIDIMARRI A, GRIFFITH D, WANG A, et al. An RC oscillator with comparator offset cancellation[J].IEEE Journal of Solid-State Circuits, 2016, 51 (8) : 1866-1877. DOI: 1866

TSUBAKI K, HIROSE T, KUROKI N, et al. A 32. 55-kHz, 472-nW, 120 ppm/℃, fully on-chip, variation tolerant CMOS relaxation oscillator for a real-time clock application[C] //Proceedings of the ESSCIRC. Bucharest, Romania, 2013: 315-318.

秦松, 王磊.一种与比较器延迟无关的高精度CMOS振荡器[J].电子科技, 2017, 30 (5): 94-97. DOI: 94

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