Fabrication of a Microcomputer Compensated Crystal Oscillator

• Main Authors: CHEN,BO-LUN, 陳柏綸
• Other Authors: GAO,YAO-HUANG
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/71369431695207259999

碩士 === 中華大學 === 電機工程學系碩士班 === 100 === This thesis is to design a microprocessor as the main core of a small microcontroller temperature compensated crystal oscillator (MCXO) , and describes the composition of the microprocessor compensated crystal oscillator , as well as hardware and software design of the part of the circuit works , the use of microprocessor components combined with the MATLAB curve fitting method to achieve the principle of temperature compensation , and to reach to save time and manpower requirements , experimental results prove the feasibility of temperature compensation principles described in this article, experiments with At cut type crystal oscillator VCXO, the operating voltage at 3.3V total consumption current of 0.087A , board actual of specifications 5cmx4.5cm, last stable degree is ± 1PPM(percent per million).