中圖分類號(hào)： TN432 文獻(xiàn)標(biāo)識(shí)碼： A DOI：10.16157/j.issn.0258-7998.201026 中文引用格式： 劉銘揚(yáng),，王小松,，劉昱. 一種調(diào)節(jié)供電進(jìn)行溫度補(bǔ)償?shù)母呔葧r(shí)鐘電路[J].電子技術(shù)應(yīng)用，2021,，47(5)：117-121. 英文引用格式： Liu Mingyang,，Wang Xiaosong，Liu Yu. A high-precision clock circuit with temperature compensation based on power supply regulation[J]. Application of Electronic Technique,，2021,，47(5)：117-121.
A high-precision clock circuit with temperature compensation based on power supply regulation
Liu Mingyang1，2,，3,，Wang Xiaosong1，2,，3,，Liu Yu1，2,，3
1.Institute of Microelectronics of Chinese Academy of Sciences,，Beijing 100029，China,； 2.University of Chinese Academy of Sciences,，Beijing 100049，China,； 3.Beijing Key Laboratory of Radio Frequency IC Technology for Next Generation Communications,，Beijing 100029，China
Abstract： Based on 0.18 μm CMOS IC process, a high-precision clock circuit that controls power supply voltage to compensate temperature was presented,，which effectively avoids the influence of temperature changes and power supply voltage fluctuations on the oscillation frequency. Compared with the other types of clock generating circuit, this structure does not require bandgap reference sources and operational amplifier. While optimizing performance, it greatly reduces the chip area and circuit complexity. Under the -40 ℃ to 85 ℃ temperature range, the output frequency is stable at 2 MHz and the clock deviation is less than 1%. When the power supply voltage fluctuates from 1.6 V to 2.0 V,， the variation of clock oscillation frequency is 28 Hz at most.
Key words : ring oscillator；temperature compensation,；clock self-correction
