教師資料查詢 | 類別: 期刊論文 | 教師: 楊維斌 Web-bin Yang (瀏覽個人網頁)

標題:A 25 MHz crystal less clock generator with background calibration against process and temperature variation
學年104
學期2
出版(發表)日期2016/05/01
作品名稱A 25 MHz crystal less clock generator with background calibration against process and temperature variation
作品名稱(其他語言)
著者Yang, Wei-Bin; Hong, Ming-Hao
單位
出版者
著錄名稱、卷期、頁數Computers and Electrical Engineering 52, p.28-37
摘要This paper presents a crystal-less clock generator using an automatic process and temperature variation calibration technique. The crystal-less clock generator comprises a voltage-controlled oscillator (VCO), differential-input-single-output (DISO) circuit, and frequency-to-voltage converter (FVC). The VCO was developed using a four-stage differential ring oscillator to generate an output frequency of 25 MHz. The DISO circuit ensures a full-swing output voltage swing of the clock generator and a 50% duty cycle. The output clock is integrated by the FVC circuit to generate an analog voltage signal to control the VCO's oscillation frequencies. The FVC can compensate and calibrate the VCO to provide a stable output frequency through the closed-loop system. The chip was fabricated using a 0.18 µm standard CMOS process with a 0.9 V supply voltage. The measured temperature coefficient was 513 ppm/°C in the temperature range of −40°C to 125°C at a 25-MHz output frequency.
關鍵字Crystal-less clock generator; Automatic process and temperature variation calibration technique; Voltage-controlled oscillator (VCO);Differential-input-single-output (DISO) circuit; Frequency-to-voltage converter (FVC)
語言英文
ISSN0045-7906;1879-0755
期刊性質國外
收錄於SCI;
產學合作
通訊作者Wei-Bin Yang
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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