標題: | A Low Voltage All-Digital On-Chip Oscillator Using Relative Reference Modeling |
作者: | Yu, Chien-Ying Yu, Jui-Yuan Lee, Chen-Yi 電機工程學系 Department of Electrical and Computer Engineering |
關鍵字: | Digitally controlled oscillator (DCO);frequency compensation;low voltage;oscillators;process, voltage, temperature (PVT) variations |
公開日期: | 1-九月-2012 |
摘要: | "This paper presents a low voltage on-chip oscillator which can compensate process, voltage, and temperature (PVT) variation in an all-digital manner. The relative reference modeling applies a pair of ring oscillators as relative references and estimates period of the internal ring oscillator. The period estimation is parameterized by a second-order polynomial. Accordingly, the oscillator compensates frequency variations in a frequency division fashion. A 1-20 MHz adjustable oscillator is implemented in a 90-nm CMOS technology with 0.04 mm(2) area. The fabricated chips are robust to variations of supply voltage from 0.9 to 1.1 V and temperature range from 0 degrees C to 75 degrees C. The low supply voltage and the small area make it suitable for low-cost and low-power systems." |
URI: | http://hdl.handle.net/11536/16587 |
ISSN: | 1063-8210 |
期刊: | IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS |
Volume: | 20 |
Issue: | 9 |
結束頁: | 1615 |
顯示於類別: | 期刊論文 |