Integrated Digitally-Controlled Crystal Oscillators for Cellular Systems In Deep Sub-micron CMOS by Danielle Griffith Texas Instruments, Inc.. Dallas, Texas Abstract: Crystal oscillator
Trang 1TEXAS A&M UNIVERSITY
Department of Electrical and Computer Engineering
College Station, Texas 77843-3128 TEL (979) 845-9583 FAX (979) 845-7161
ella@ece.tamu.edu http://amsc.tamu.edu
S E M I N A R
Room 104A ZEC
Thursday, April 8, 2010 3:55 - 5:10 P.M
Integrated Digitally-Controlled Crystal Oscillators for Cellular Systems
In Deep Sub-micron CMOS
by Danielle Griffith Texas Instruments, Inc
Dallas, Texas
Abstract: Crystal oscillators are an essential part of wireless communication systems.
This tutorial will describe typical system requirements for a reference oscillator, including tuning range, phase noise, frequency resolution, and software control, using the GSM/EDGE standard as an example Design techniques will be presented with a focus on challenges faced in deep sub-micron CMOS Finally, a complete design in 65nm CMOS
in 0.09mm2 will be shown that that generates both 38.4MHz and also a 32.768kHz real time clock from a single 38.4MHz crystal This oscillator has a phase noise of -135dBc/Hz
at 1kHz offset and tuning range of 280ppm with 2ppb/step and guaranteed monotonicity
Danielle Griffith is a Senior Member of the Technical Staff in the Low Power RF group at
Texas Instruments in Dallas, TX She is responsible for design of RF and analog circuits for various standards and has also worked MEMS interface circuit design She joined Texas Instruments in 2003 Before that, she was an RF design engineer at Motorola in Tempe, AZ She has 14 years experience in RF and analog design She received her bachelors and masters degrees from the Massachusetts Institute of Technology and holds 9
US patents