← 返回 JSSC 论文列表JSSC 2012第2期Clocking & PLLs65nmCrystal Oscillator
A Differential Digitally Controlled Crystal Oscillator With a 14-Bit Tuning Reso
一种用于蜂窝应用的14位调谐分辨率差分数字控制晶体振荡器。
65nm CMOS, 26MHz, 149.1 dBc/Hz @10kHz, 1.2mA
数字控制晶体振荡器差分输出高分辨率调谐相位噪声IEEE 802.11n
▸差分正弦波输出减少噪声和干扰
▸14位高分辨率调谐
▸满足IEEE 802.11n严格相位噪声要求
Abstract
This paper describes the de sign topologies and con-
siderations of a differential sinusoi dal-output digitally controlled
crystal oscillator (DCXO) intende d for use in cellular applications.
T h eo s c i l l a t o rh a safine-tuning range of 44 ppm, approximately
14 bits of resolution, and an average step size of 0.005 ppm. All sig-
nals connecting externally to I/O pins are sine waves for reducing
noise, interference, and spurs couplings. The 26 MHz DCXO fabri-
cated in 65 nm CMOS achieves a p