标题: | An eCrystal Oscillator with Self-Calibration Capability |
作者: | Yu, Chien-Ying Yu, Jui-Yuan Lee, Chen-Yi 电子工程学系及电子研究所 Department of Electronics Engineering and Institute of Electronics |
公开日期: | 2009 |
摘要: | This paper reports an embedded crystal (eCrystal) oscillator which is capable of compensating process, voltage, and temperature (PVT) variation. The delay behaviors of two different delay cells are exploited for the delay estimation. Then the estimated delay is parameterized by a second order approximated function. According to the estimated delay, the eCrystal oscillator is able to calibrate the frequency error without any external reference. A 40MHz oscillator is implemented in a 90-nm CMOS technology with area of 0.4mm(2) by an all-digital approach. The fabricated chip is measured under supply voltage from 0.9V to 11.1V and temperature range from 0 degrees C to 75 degrees C with active power consumption of 237 mu W. |
URI: | http://hdl.handle.net/11536/14078 |
ISBN: | 978-1-4244-3827-3 |
期刊: | ISCAS: 2009 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-5 |
起始页: | 237 |
结束页: | 240 |
显示于类别: | Conferences Paper |