CMOS石英晶振最优起振条件分析与电路设计CMOS石英晶振最优启振条件分析与电路设计摘 要：本文基于自动控制原理，对PierceCMOS晶振电路的启振条件作了详细的分析，对电路中影响石英晶振起振的各种寄生参数作了深入研究，结合Matlab对理论分析作了验证，并以15Mhz晶振为例，设计了一个保证晶振可靠起振的最优反相器，最后通过HSPICE模拟进一步验证了理论分析的正确性。关键词：CMOS；石英晶振；启振条件 The optimum start-up conditions analysis and Circuit design of CMOS Crystal Oscillator Jiang Renjie (School of Computer Science, National University of Defense Technology)Abstract：This paper investigates the start-up conditions in Pierce CMOScrystal oscillator base upon the auto-control principle . The effect ofoscillator start-up conditions caused by crystal circuit parasitics hasbeen analyzed theoretically in detail. The result of theoretical analysisis verified using Matlab, and the optimum inverter which can guaranteec……