一种高精度低功耗RC振荡器设计
Design of a high-precision low-power CMOS RC oscillator
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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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