教師資料查詢 | 類別: 專利 | 教師: 李揚漢 Lee Yang-han (瀏覽個人網頁)

標題:Digital adjustable chip oscillator
學年94
學期2
專利開始日期2006/02/21
作品名稱Digital adjustable chip oscillator
作品名稱(其他語言)
著者Chang, Chia-yang; Chen, Po-chang; Lee, Yang-han; Yang, Ching-yuan
單位淡江大學電機工程學系
著錄名稱、卷期、頁數
描述United States Patent: 7,002,414;專利國別美國;Application number: 10/688,516;國際分類號:H03L 7/00
摘要A digital adjustable chip oscillator comprises a voltage control oscillator, a reference voltage circuit, a voltage regulation circuit, a digital tuning circuit, a frequency detector and a programmable controller. The oscillator generates an oscillation signal and receives a control voltage and an operating voltage from the voltage regulation circuit and the reference voltage circuit to stabilize and adjust the frequency of oscillation signal. The digital tuning circuit receives a digital code stored in a programmable memory to adjust the control voltage. The frequency detector detects and compares the frequency of oscillation signal with a first and second frequency, wherein when the frequency of the oscillation signal lies between the first and second frequency, the frequency detector outputs a high voltage signal and otherwise the frequency detector outputs a low voltage signal. The programmable controller receives the high voltage signal to stop a programmable counter to acquire the digital code.
關鍵字
語言英文(美國)
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!