一种含上电复位功能的超低功耗振荡器设计

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中图分类号：TN752-34 文献标识码：A 文章编号：1004-373X（2025）18-0065-05

引用格式：.一种含上电复位功能的超低功耗振荡器设计[J].现代电子技术，2025，48（18）：65-69

Abstract：Inorder to provide stableand reliable clock signal with lower power consumption，an ultra-low power looped oscilltorwithpower-onreset （POR）andbrown-outdetection（BOD）isproposed.Thisdesignconsistsoftwocircuits：thelowstatic-curentPORcircuitcangeneratevoltagereferencebasedontheintrinsicMOStransistor，releasethereset signalafter detecting thechangeofpowersuplyvoltage，andcutoffmostofthecircuitaftertheresetsignalisreleased，whichcagreatly reducethequiescentcurrent.Intheoscilltorcircuit，thethree-stageringoscilatorstructure isapplied，whichhassimple startingcondition，lowcurrentconsumption，andisconnectedwithaninvertertoincreasethedrivingability.ThePORcircuit caninputresetsignaltothefollowingringosciator，whichoperaestheoscillaorwithintedesignedvolagerange，andtains a stable oscilation signal with a small area and power consumption.The simulation results based on 0.13μm CMOS process showthatthequiescentcurrentof thePORpartofthecircuit isabout26.6nAatvoltageofO.6V，theoverallcircuit power consumption is about 82nW ，and the silicon area is occupied by 57.7μm×37.8μm ：

Keywords：oscilltor;ultra-lowpowerconsumption;power-on-reset;brow-outdetection;lowquiescetcurrent;voltage reference

0 引言

近年来医疗、物联网、可穿戴领域的设备飞速发展并广泛应用，往往要求芯片能够持续工作数月甚至数年，因此对静态功耗提出更高的要求，所使用电路的平均功耗往往被限制在 ΠnW 级[1-3]。（剩余5305字）