期刊論文

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
ISSN 0045-7906;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