电子元件与材料2016，Vol.35Issue(7)：68-71,4.DOI:10.14106/j.cnki.1001-2028.2016.07.016
一种频率可调低温漂振荡器的设计
Design of oscillator with adjustable frequency and low temperature drift
摘要
Abstract
An output frequency adjustable, temperature drift low,structure simple relaxation oscillator was designed. Using clamp effect of the reference voltage and negative feedback, the period of oscillation of the oscillator was linearly changed by altering the resistance value of the external resistor. Based on the principle that the voltage on both ends of the capacitor can not mutate, the hopping capacitor voltage after each charge and discharge were far away from the threshold point of the inverter and eliminated the hysteresis comparator in conventional structure which could simplify the circuit structure and reduce the oscillator reset delay. Based on 0.18μm BCD process mode, in typical applications, simulation by Cadence and Hspice shows that the range of oscillation output frequency is 500 kHz-2 MHz, and the offset of oscillator frequency with temperature variation is within ±2.76%when the temperature ranges in–20-+120 ℃.关键词
张弛振荡器/频率可调/低温漂/负反馈/充放电电容/反相器阈值Key words
relaxation oscillator/frequency adjustable/low temperature drift/negative feedback/capacitance of charge and discharge/threshold point of inverter分类
信息技术与安全科学引用本文复制引用
付鑫,冯全源..一种频率可调低温漂振荡器的设计[J].电子元件与材料,2016,35(7):68-71,4.基金项目
国家自然科学基金重点项目资助（No.61531016）；国家自然科学基金面上项目资助（No.61271090)；四川省科技支撑计划项目资助（No.2015GZ0103；No.2016GZ0059) （）
